Stabilization of poly(3-hexylthiophene)/PCBM morphology by hydroxyl group end-functionalized P3HT and its application to polymer solar cells

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• 作者：Yi-Hao Chen^a ; Ping-Tsung Huang^a ; ^{073802@mail.fju.edu.tw} ; Keng-Ching Lin^b ; Yu-Jui Huang^c ; Chin-Ti Chen^c ;
• 关键词：Poly(3-hexylthiophene) ; PCBM ; End-functionalized P3HT ; H-bond ; Compatibilizer
• 刊名：Organic Electronics
• 出版年：2012
• 出版时间：February 2012
• 年：2012
• 卷：13
• 期：2
• 页码：283-289
• 全文大小：1306 K

文摘

A new concept to stabilize the morphology of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C₆₁-butyric acid methyl ester (PCBM) blend through H-bond formation by using a hydroxyl group end-functionalized P3HT (HOC-P3HT-COH) as a compatibilizer is presented. Domain size of the PCBM crystals in the annealed P3HT/PCBM film is diminished with addition of HOC-P3HT-COH. Surface roughness of the P3HT/PCBM film also becomes smoother with addition of HOC-P3HT-COH. Thermal stability of solar cell device is improved significantly through the H-bond formation between HOC-P3HT-COH and PCBM. A high performance and thermal stable polymer solar cell with 4.06 % power conversion efficiency under AM1.5G irradiation is fabricated with 5 % HOC-P3HT-COH in P3HT/PCBM layer.