兰州石化职业技术学院学报
蘭州石化職業技術學院學報
란주석화직업기술학원학보
JOURNAL OF LANZHOU PETROCHEMICAL VOCATIONAL COLLEGE OF TECHNOLOGY
2014年
2期
6-10
,共5页
共轭聚合物%窄带隙%太阳能电池材料
共軛聚閤物%窄帶隙%太暘能電池材料
공액취합물%착대극%태양능전지재료
conjugated polymers%narrow band-gap%solar cells
采用Stilling偶合反应合成了噻吩-苯-噻吩和2,5-二(三甲基锡)基噻并[3,2-b]噻吩窄带隙交替共轭聚合物PTPT-bT(Eg=2.03eV)。所得聚合物具有良好的热稳定性、溶解性及成膜性能。共聚物在四氢呋喃中和固体薄膜中的光致发光发射峰分别为566 nm和583nm。最高占有分子轨道(HOMO)和最低未占有分子轨道(LUMO)值分别为-5.29eV和-3.01eV。在模拟太阳光照AM1.5(89mW· cm-2)下,基于PTPT-bT:PC70 BM(1:4)共混膜的光伏器件的光电转换效率(PCE)为2.99%,开路电压(Voc)为0.80V,短路电流(Jsc)为6.97mA/cm2,填充因子为0.48。
採用Stilling偶閤反應閤成瞭噻吩-苯-噻吩和2,5-二(三甲基錫)基噻併[3,2-b]噻吩窄帶隙交替共軛聚閤物PTPT-bT(Eg=2.03eV)。所得聚閤物具有良好的熱穩定性、溶解性及成膜性能。共聚物在四氫呋喃中和固體薄膜中的光緻髮光髮射峰分彆為566 nm和583nm。最高佔有分子軌道(HOMO)和最低未佔有分子軌道(LUMO)值分彆為-5.29eV和-3.01eV。在模擬太暘光照AM1.5(89mW· cm-2)下,基于PTPT-bT:PC70 BM(1:4)共混膜的光伏器件的光電轉換效率(PCE)為2.99%,開路電壓(Voc)為0.80V,短路電流(Jsc)為6.97mA/cm2,填充因子為0.48。
채용Stilling우합반응합성료새분-분-새분화2,5-이(삼갑기석)기새병[3,2-b]새분착대극교체공액취합물PTPT-bT(Eg=2.03eV)。소득취합물구유량호적열은정성、용해성급성막성능。공취물재사경부남중화고체박막중적광치발광발사봉분별위566 nm화583nm。최고점유분자궤도(HOMO)화최저미점유분자궤도(LUMO)치분별위-5.29eV화-3.01eV。재모의태양광조AM1.5(89mW· cm-2)하,기우PTPT-bT:PC70 BM(1:4)공혼막적광복기건적광전전환효솔(PCE)위2.99%,개로전압(Voc)위0.80V,단로전류(Jsc)위6.97mA/cm2,전충인자위0.48。
The alternating narrow band -gap conjugated polymer PTPT -bT (Eg =2.03eV) is synthesized, which derived from thiophene -phenylene-thiophene and 2, 5-bis (trimethylstannyl) thieno[3,2-b] thionphene by Stilling coupling reaction .In THF solution and solid thin film , PL emission peaks of the copolymer are around 566nm and 583nm respectively.The values of highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) are -5.29eV and -3.01eV respectively.Under AM 1.5 simulator (89mW· cm-2), the photovotaic devices based on PTPT -bT:PC70 BM(1:2) blend ITO/PEDOT:PSS/PTPT-bT:PC70 BM/Ba/Al show power conversion efficiency (PCE) of 2.99%, an open circuit voltage(Voc) of 0.80 V, a short circuit cur-rent (Isc) of 6.97mA/cm2 and a fill factor (FF) of 48%.