본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy v.174, 2017년, pp.7 - 16   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Modulation of π-spacer of carbazole-carbazole based organic dyes toward high efficient dye-sensitized solar cells

Chitpakdee, Chirawat (National Nanotechnology Center (NANOTEC), National Science and Development Agency (NSTDA), Pathum Thani 12120, Thailand ) ; Jungsuttiwong, Siriporn (Center for Organic Electronics and Alternative Energy, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand ) ; Sudyoadsuk, Taweesak (Center for Organic Electronics and Alternative Energy, Ubon Ratchathani University, Ubon Ratchathani 34190, Thailand ) ; Promarak, Vinich (School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Wang Chan, Rayong 21210, Thailand ) ; Kungwan, Nawee (Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand ) ; Namuangruk, Supawadee (National Nanotechnology Center (NANOTEC), National Science and Development Agency (NSTDA), Pathum Thani 12120, Thailand ) ;
  • 초록  

    Abstract The effects of type and position of π-linker in carbazole-carbazole based dyes on their performance in dye-sensitized solar cells (DSSCs) were investigated by DFT and TDDFT methods. The calculated electronic energy level, electron density composition, charge injection and charge recombination properties were compared with those of the high performance CCT3A dye synthesized recently. It is found that that mixing a benzothiadizole ( B ) unit with two thiophene ( T ) units in the π-spacer can greatly shift absorption wavelength to near infrared region and enhance the light harvesting efficiency (LHE) resulting in increasing of short-circuit current density ( J sc ), whereas a thienothiophene unit does not affect those properties. However, a B should be not directly connected to the anchoring group of the dye because it brings electrolyte to the TiO 2 surface which may increase charge recombination rate and consequently decrease open circuit voltage ( V oc ). This work shows how type and position of the π-linker affect the performance of DSSCs, and how to modulate those properties. We predicted that the designed dye derived from insertion of the B unit in between the two T units would have higher performance than CCT3A dye. The insight understanding from this study is useful for further design of higher performance dyes by molecular engineering. Highlights The effects of type and position of π-linker in the dye's structure on their performance in DSSCs were investigated. Mixing of a benzothiadizole into two thiophene moieties in π-linker enhanced the efficiency of dye. V oc is sensitive to the position of benzothiadizole, while J sc is affected by the type of π-linker. Graphical Abstract [DISPLAY OMISSION]


  • 주제어

    Carbazole .   Benzothiadizole .   Thienothiophene .   DSSC .   TD-DFT.  

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역

원문보기

무료다운로드
  • 원문이 없습니다.

유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.

NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

이 논문과 함께 출판된 논문 + 더보기