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Low-Band-Gap Conjugated Polymers Based on Thiophene for Organic Photovoltaic Cell

등록일
2009년 8월 21일 15시 11분 43초
접수번호
1515
발표코드
39P340포 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 <발표Ⅳ>
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
정연수, 조연경, 표명호
순천대학교 화학과, Korea
Over the past decades, solar cells based on organic semiconductors or hybrid organic/inorganic composites have been very attractive topic because of the advantages which include low fabrication cost, simple fabrication process and flexibility. Although their photovoltaic (PV) performance were very poor than other inorganic based solar cell, recent studies have reported improved PV performance with low-band-gap conjugated polymer. In thisk work, composites of poly(3-heylthiophene) (P3HT) with poly(thieno[3,4-b]thiophene-2-carboxylic acid) (PTTA) or poly(3-thiophenecarboxylic acid) (PTCA) on TiO2 nanoparticles were investigated by UV-visible spectroscopy (UV-Vis), photoluminescence (PL), fourier transform infrared absorption (FT-IR), thermo gravimetric analysis (TGA) and field emissionscanning electron microscope (FE-SEM). Chemically prepared PTTA and PTCA were absorbed on TiO2 nanoparticles for the improvement of the electron transfer process from thiophene polymers to TiO2. PTTA and PTCA were expected to mediate electron transfer, resulting in efficient charge separation between P3HT and TiO2. We also examined how these polymers affect the performance of organic photovoltaic (OPV) cells.

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