کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5183767 | 1381028 | 2010 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Low bandgap EDOT-quinoxaline and EDOT-thiadiazol-quinoxaline conjugated polymers: Synthesis, redox, and photovoltaic device Low bandgap EDOT-quinoxaline and EDOT-thiadiazol-quinoxaline conjugated polymers: Synthesis, redox, and photovoltaic device](/preview/png/5183767.png)
Three new low bandgap conjugated copolymers with 3,4-ethylenedioxythiophene (EDOT) as donor and 2,3-bis(4-octyloxyphenyl)-quinoxaline (P1), 2,3-bis(4-octyloxyphenyl)-thiadiazol-quinoxaline (P2, P3) as acceptors were synthesized by Stille cross-coupling reaction, and their optical and electrochemical properties were studied. These polymers exhibited optical bandgap of 1.77, 1.29 and 1.13Â eV, for P1, P2 and P3, respectively. Photovoltaic cells with device configuration of ITO/PEDOT: PSS/Copolymer: PCBM (1:4Â w/w)/LiF/Al were fabricated. The measurements revealed an open-circuit voltage (Voc) of 0.52Â V, short-circuit current density (Jsc) of 3.24Â mA/cm2 and power conversion efficiency (PCE) of 0.60% for P1, and showed a Voc of 0.33Â V, Jsc of 2.11Â mA/cm2, PCE of 0.39% for P2.
Journal: Polymer - Volume 51, Issue 11, 14 May 2010, Pages 2313-2319