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Solar energy materials and solar cells : an intern... 16건

  1. [해외논문]   Editorial Board  


    Solar energy materials and solar cells : an international journal devoted to photovoltaic, photothermal, and photochemical solar energy conversion v.175 ,pp. IFC , 2018 , 0927-0248 ,

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  2. [해외논문]   Editorial Board   SCI SCIE


    Solar energy materials and solar cells : an international journal devoted to photovoltaic, photothermal, and photochemical solar energy conversion v.175 ,pp. IFC - IFC , 2018 , 0927-0248 ,

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

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  3. [해외논문]   Interactions between molecules and perovskites in halide perovskite solar cells   SCI SCIE

    Zhang, Lei (Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science & Technology, Nanjing 210044, China ) , Liu, Xiaogang (Singapore University of Technology and Design, 8 Somapah Road, 138682 Singapore, Singapore ) , Li, Jingfa (Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean, Nanjing University of Information Science & Technology, Nanjing 210044, China ) , McKechnie, Scott (Department of Physics, Kings College London, London WC2R 2LS, United Kingdom)
    Solar energy materials and solar cells : an international journal devoted to photovoltaic, photothermal, and photochemical solar energy conversion v.175 ,pp. 1 - 19 , 2018 , 0927-0248 ,

    초록

    Abstract Halide perovskite solar cells have been intensively researched in recent years, owing to their tremendous potentials to provide clean energy at low cost. To further improve their performances, molecular adsorption approach has been adopted to modify the halide perovskite surface/interface structures, with an aim to enhance the power conversion efficiency and stability of halide perovskite solar cells. In this article, we review recent progresses on the molecular adsorption approach, by surveying newly reported adsorbate molecules forming halogen bonds, hydrogen bonds, Lewis acid-base pairs and other interactions with the halide perovskite surface/interface. Representative examples of the molecular adsorption at three types of perovskite interfaces (perovskite/perovskite interface, perovskite/electron transporting layer, and perovskite/hole transporting layer) have been discussed, with a focus on their structural aspects. Recent progresses of molecular adsorption approaches in related optoelectronic materials and applications based on halide perovskites are also reviewed. It is hoped that this review will facilitate the rational design and development of novel molecular adsorption methods.

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  4. [해외논문]   Dual function of ultrathin Ti intermediate layers in CZTS solar cells: Sulfur blocking and charge enhancement   SCI SCIE

    Guo, Huafei (School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology, Changzhou University, Changzhou 213164, China ) , Ma, Changhao (School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology, Changzhou University, Changzhou 213164, China ) , Zhang, Kezhi (School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation base for State Key Laboratory of Photovoltaic Science and Technology, Changzhou University, Changzhou 213164, China ) , Jia, Xuguang (School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Jiangsu Province Cultivation base for State Key Lab) , Wang, Xiuqing , Yuan, Ningyi , Ding, Jianning
    Solar energy materials and solar cells : an international journal devoted to photovoltaic, photothermal, and photochemical solar energy conversion v.175 ,pp. 20 - 28 , 2018 , 0927-0248 ,

    초록

    Abstract An ultrathin Ti film acting as both an intermediate layer and a dopant was inserted at the interface between Mo and Cu 2 ZnSnS 4 (CZTS) to improve the performance of CZTS solar cells. Different from previously reported blocking layers, the Ti intermediate layer inhibited the formation of a MoS 2 layer and voids at the interface between the Mo and CZTS absorber and also influenced the crystallinity, surface evenness, Hall mobility, and absorptivity of the CZTS absorber. When the thickness of the Ti blocking layer increased to 20nm, the conversion efficiency of the solar cell increased by 57%, along with an increase in the open-circuit voltage of 32%. The effect of the Ti layer on the microstructure and performance of the CZTS film is discussed here in detail. These results serve as guiding principles for preparing high-quality CZTS thin films for potential applications in low-cost solar cells. Highlights An ultrathin Ti film acting as intermediate layer and dopants between Mo and CZTS to improve the device performance. The Ti blocking layer prevents the diffusion of S into the Mo films, and thereby prevents the formation of MoS 2 . Ti was incorporated in the lattice of the CZTS film improving crystallinity, surface evenness and mobility of CZTS film. Increasing the thickness of Ti film to 20nm, the power efficiency was improved by 57% along with a V oc increase by 32%. Graphical abstract [DISPLAY OMISSION]

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  5. [해외논문]   Enhancing the efficiency of transparent dye-sensitized solar cells using concentrated light   SCI SCIE

    Selvaraj, Prabhakaran (Environment and Sustainability Institute (ESI), University of Exeter, Penryn Campus, TR10 9FE, United Kingdom ) , Baig, Hasan (Environment and Sustainability Institute (ESI), University of Exeter, Penryn Campus, TR10 9FE, United Kingdom ) , Mallick, Tapas K. (Environment and Sustainability Institute (ESI), University of Exeter, Penryn Campus, TR10 9FE, United Kingdom ) , Siviter, Jonathan (School of Engineering, University of Glasgow, Glasgow G12 8QQ, United Kingdom ) , Montecucco, Andrea (School of Engineering, University of Glasgow, Glasgow G12 8QQ, United Kingdom ) , Li, Wen (School of Engineering, University of Glasgow, Glasgow G12 8QQ, United Kingdom ) , Paul, Manosh (School of Engineering, University of Glasgow, Glasgow G12 8QQ, United Kingdom ) , Sweet, Tracy (School of Engineering, Cardiff University, Cardiff CF24 3AA, United Kingdom ) , Gao, Min (School of Engineering, Cardiff University, Cardiff CF24 3AA, United Kingdom ) , Knox, Andrew R. (School of Engineering, University of Glasgow, Glasgow G12 8QQ, United Kingdom ) , Sundaram, Senthilarasu (Environment and Sustainability Institute (ESI), University of Exeter, Penryn Campus, TR10 9FE, United Kingdo)
    Solar energy materials and solar cells : an international journal devoted to photovoltaic, photothermal, and photochemical solar energy conversion v.175 ,pp. 29 - 34 , 2018 , 0927-0248 ,

    초록

    Abstract Transparent dye-sensitized solar cells (DSSCs) can be coupled within a building's architecture to provide daylighting and electrical power simultaneously. In this work, the relationship between the transparency and performance of DSSCs is studied by changing the TiO 2 electrode thickness. The 10μm thickness device shows a power conversion efficiency of 5.93% and a J sc of 12.75mA/cm 2 with 37% transparency in the visible range. However, the performance loss in DSSCs during the scale up process is a potential drawback. This can be addressed using an optical concentrator with DSSC to generate more power from small size devices. Here, a compound parabolic concentrator (CPC) is coupled with DSSCs and its performance is compared to a scaled-up device (approx. 4 times). Furthermore, the impact of operating temperature on the performance of the bare and concentrator-coupled devices is discussed in this article. An increase of 67% in power conversion efficiency is observed at 36°C for the concentrator-coupled device under 1000W/m 2 illumination. Maximum J sc of 25.55mA/cm 2 is achieved at 40°C for the concentrated coupled device compare with the J sc of 13.06mA/cm 2 for the bare cell at the same temperature. Highlights The relationship between thickness and transparency of the DSSCs. Comparison of the photovoltaic performance of bare and low concentrator coupled transparent devices. Scaling up of DSSCs and its performance comparison with low concentrated coupled devices. Impact of device operating temperature on the photovoltaic performance for bare and concentrator coupled cells.

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  6. [해외논문]   Controlling intercalations of PBDTTT-EFT side chain to initiate suitable network for charge extraction in PBDTTT-EFT:PC71BM blended bulk heterojunction solar cell   SCI SCIE

    Komilian, Soheil (Corresponding author.) , Oklobia, Ochai , Sadat-Shafai, Torfeh
    Solar energy materials and solar cells : an international journal devoted to photovoltaic, photothermal, and photochemical solar energy conversion v.175 ,pp. 35 - 40 , 2018 , 0927-0248 ,

    초록

    Abstract Electrical, optical and structural properties, based on blend of PBDTTT-EFT:PC 71 BM bulk heterojunction solar cell is investigated. We have shown the presence of PC 71 BM in the blend facilitates interfaces for charge transfer mechanisms leading to PCEs of ~ 9.38%. GIXRD line profile obtained reveals that quantitative presence of PC 71 BM initiates a change in preferred orientation. It is proposed that PC 71 BM facilitates polymer alkyl side chain intercalations causing reduced d 100 spacing, leading to larger π-π stacking of the back bone. The data obtained from d 200 plane associated with PC 71 BM, reveals correlation between increased vertical stacking and PC 71 BM loading, suggesting a bicontinuous network for electron transport. Raman spectroscopy results provides evidence of PC 71 BM impact on frequency shift associated with C = C stretching mode of side chain thiophene rings responsible for of π-π spacing. Correlations between AFM surface roughness and blend ratio reveals migration of PC 71 BM to the film surface. Highlights The impact of PBDTTT-EFT side chain intercalations on dihedral angle rotations. The impact of PBDTTT-EFT preferred orientation on PC 71 BM vertical migration. Correlation between AFM surface roughness and fill factor. Correlation between Photoluminescence quenching and donor/acceptor nanostructure and its impact on PCEs. Graphical abstract Schematic diagram showing molecular orientation of PBDTTT-EFT and PC 71 BM with respect to the substrate. [DISPLAY OMISSION]

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  7. [해외논문]   Quasi-crystal photonic structures for fullband absorption enhancement in thin film silicon solar cells   SCI SCIE

    Chen, Peizhuan (School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China ) , Niu, Pingjuan (School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China ) , Yu, Liyuan (School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China ) , zhang, Jianjun (Institute of Photoelectronics, Tianjin Key Laboratory of Photoelectronic Thin-film Devices and Technique, Key Laboratory of Optical Information Science & Technology, Nankai University, Tianjin 300071, China ) , Fan, Qihua (Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA ) , Yang, Guanghua (School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China ) , Fu, Xiansong (School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin 300387, China ) , Hou, Guofu (Institute of Photoelectronics, Tianjin Key Laboratory of Photoelectronic Thin-film Devices and Technique, Key Laboratory of Optical Information Science & Tech)
    Solar energy materials and solar cells : an international journal devoted to photovoltaic, photothermal, and photochemical solar energy conversion v.175 ,pp. 41 - 46 , 2018 , 0927-0248 ,

    초록

    Abstract To further increase the efficiency of thin film solar cells, it is critical to enhance the absorption over the full spectral wavelength range in which solar cells generate electricity. In this letter, we present a fullband absorption enhancement method for n-i-p thin film silicon solar cells based on a Quasi-Crystal Structure (QCS) by superimposing Ag random nanotextures on periodically patterned Micro-Cone Substrates. Both light in-coupling and light trapping abilities are significantly improved thanks to the reduction of front-surface reflection originated from the gradually changed refractive index of preserved micro-cone profile after film deposition and the richer guided mode resonances caused by the QCS. An initial efficiency of 10.4% is obtained for QCS-based hydrogenated amorphous silicon germanium (a-SiGe:H) solar cells, which outperforms the planar (efficiency of 7.5%) and randomly nanotextured (efficiency of 8.7%) counter part by 38.7% and 19.5%, respectively. The QCS can also be duplicated for other thin film photovoltaic devices and provides a new approach for creating high-efficiency thin-film solar cells. Highlights A high-efficiency light harvesting structure is proposed using Quasi-Crystal Substrate (QCS); The QCS is formed by superposing the randomly nanotextures on periodically patterned micro-cone textures; Full-spectral absorption enhancement was obtained thanks to the coeffect of enhanced light in-coupling and light trapping; A 10.4% efficiency was achieved for the QCS-based a-SiGe:H solar cell, which outperforms the planar and randomly nanotextured counter parts by 38.7% and 19.5%, respectively.

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  8. [해외논문]   Semi-polar InGaN/GaN multiple quantum well solar cells with spectral response at up to 560nm   SCI SCIE

    Bai, J. (Corresponding author.) , Gong, Y.P. , Li, Z. , Zhang, Y. , Wang, T.
    Solar energy materials and solar cells : an international journal devoted to photovoltaic, photothermal, and photochemical solar energy conversion v.175 ,pp. 47 - 51 , 2018 , 0927-0248 ,

    초록

    Abstract We demonstrate a series of semi-polar InGaN/GaN multiple quantum well (QW) based solar cells with high indium content, where operating wavelength ranges from green to amber. These devices are grown on high crystal quality overgrown semi-polar GaN templates. The spectral response at a long wavelength of up to 560nm has been obtained. With increasing indium content of QWs (i.e., increasing operating wavelength), the external quantum efficiency increases across a wide range of wavelength. Compared to the device with green QWs, the devices with amber QWs exhibits significantly increased short-circuit current density and conversion efficiency, achieving a current density of 1.4mA/cm 2 and an enhancement factor of 170% under the AM 1.5G illumination. Photoluminescence excitation measurements show that it is attributed to enhanced light absorption in InGaN QWs by pushing the QW absorption edge towards longer wavelength. Furthermore, another series of InGaN QW solar cells is investigated with different indium contents in the three QWs of each device. The device with two yellow QWs on the top and one blue QW underneath exhibits spectral response at a long wavelength of up to 560nm, whereas the device with one blue QW on the top and two yellow QWs underneath shows no response beyond 460nm. It reveals that the InGaN QW closest to the top p -type GaN plays a determined role in the spectral response on the long wavelength side. Highlights An InGaN MQW solar cell with spectral response at wavelength up to 600nm is realized. The cell efficiency increases with increasing the operating wavelength. The In segregation in InGaN MQWs leads to a significant enhancement in the efficiency. The spectral response depends on the QW closest to p-GaN layer.

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  9. [해외논문]   Outdoor organic photovoltaic module characteristics: Benchmarking against other PV technologies for performance, calculation of Ross coefficient and outdoor stability monitoring   SCI SCIE

    Bristow, N. (Corresponding author.) , Kettle, J.
    Solar energy materials and solar cells : an international journal devoted to photovoltaic, photothermal, and photochemical solar energy conversion v.175 ,pp. 52 - 59 , 2018 , 0927-0248 ,

    초록

    Abstract A comparison of performance parameters for first, second and third generation PV technologies has been conducted. Organic photovoltaic (OPV) modules displayed markedly different outdoor performance characteristics to other PV technologies owing to the positive temperature coefficient, lower thermal mass and response under low light conditions. The linear relationship between irradiance and module temperature rise above ambient is studied, leading to calculation of values for the Ross coefficient for OPV modules. OPVs are shown to possess a lower Ross coefficient than poly-Si, due to the lower absorption of infrared radiation. The effect of wind speed on the Ross coefficient is also investigated, showing the effect that module structure has upon outdoor PV performance, with the OPV module cooling quicker under windy conditions than the poly-Si due to a lower thermal mass. A long term stability study on OPV modules with a silver nanowire-zinc oxide (AgNW-ZnO) composite front electrode has showed two phases of degradation: a short initial burn-in with significant drops in performance; followed by stabilisation and degradation progressing at a much slower rate. During the burn-in period the modules showed diurnal reversible degradation in the short circuit current (I SC ), whereas open circuit voltage (V OC ) and fill factor (FF) show a steady decline. The reversible degradation is assumed to be related to the desorption of oxygen from the ZnO layer during the day due to UV excitation, leading to an increase in trap formation and a drop in current generation capacity, followed by re-adsorption of the oxygen overnight. Highlights Performance of OPVs benchmarked against other technologies. Ross coefficient reported for OPV modules. Reversible degradation observed during “burn-in” stage.

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  10. [해외논문]   Preparation and characterization of an inorganic magnesium chloride/nitrate/graphite composite for low temperature energy storage   SCI SCIE

    Galazutdinova, Yana (Department of Chemical Engineering and Mineral Processing and Center for Advanced Study of Lithium and Industrial Minerals (CELiMIN), Universidad de Antofagasta, Campus Coloso, Av. Universidad de Antofagasta, 02800 Antofagasta, Chile ) , Vega, Mariela (Universidad Mayor de San Simón, Facultad de Ciencias y Tecnología, Cochabamba, Bolivia ) , Grá (Department of Chemical Engineering and Mineral Processing and Center for Advanced Study of Lithium and Industrial Minerals (CELiMIN), Universidad de Antofagasta, Campus Coloso, Av. Universidad de Antofagasta, 02800 Antofagasta, Chile ) , geda, Mario (GREA Innovació) , Cabeza, Luisa F. (Concurrent, INSPIRES Research Centre, Universitat de Lleida, Pere de Cabrera s/n, 25001 Lleida, Spain ) , Ushak, Svetlana (Department of Chemical Engineering and Mineral Processing and Center for Advanced Study of Lithium and Industrial Minerals (CELiMIN), Universidad de Antofagasta, Campus Coloso, Av. Universidad de Antofagasta, 02800 Antofagasta, Chile)
    Solar energy materials and solar cells : an international journal devoted to photovoltaic, photothermal, and photochemical solar energy conversion v.175 ,pp. 60 - 70 , 2018 , 0927-0248 ,

    초록

    Abstract In this study, an inorganic mixture of 40wt% MgCl 2 ·6H 2 O and 60wt% Mg(NO 3 ) 2 ·6H 2 O was impregnated into two types of the expanded graphite (EG): EG flakes and EG matrix. Different methods of preparation usually used in the organic composite preparation, such as direct blending, vacuum impregnation, ultrasonic impregnation and immersion were applied in this work. Considering the samples with EG matrix, it can be concluded that the optimal result of the encapsulation and ΔH ratio can be reached with the experimental time of 1, 3 and 4h using the vacuum, ultrasound and immersion methods, respectively. Moreover, the percentage of encapsulation increases with the experimental time and with the EG percentage for the EG matrix and for the EG flakes, respectively. Concerning the supercooling phenomena, the results show that the presence of EG reduces the difference between fusion and crystallization temperature for up to 65%, acting as а nucleating agent. The resulting composite samples (CPCM) were proved to have good latent heat and a significant reduction of the supercooling effect, which eliminates the need to use nucleating agents, that are essential for pure PCM of 40wt% MgCl 2 ·6H 2 O and 60wt% Mg(NO 3 ) 2 ·6H 2 O. Moreover, using EG suppresses significantly the melting time which indicates the heat transfer enhance of the mixture. This circumstance could allow to empower the utilization of the mentioned mixture in different fields of thermal energy storage at low temperature. Highlights Novel inorganic magnesium chloride/nitrate/graphite composite was developed. Two different types of expanded graphite (matrix and flakes) were used. The novel PCM/EG was proved to have good latent heat. The use of EG suppresses completely supercooling effect presented in salt hydrates. The EG suppresses significantly the melting time and enhance the heat transfer.

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