Kim Jae-Ryoung, Jung Jung Hoon, Shin Won Suk, So Won-Wook, Moon Sang-Jin
Energy Materials Research Center, Korea Research Institute of Chemical Technology, Jang-dong 100, Yuseong-gu, Daejeon 305-343, Korea.
J Nanosci Nanotechnol. 2011 Jan;11(1):326-30. doi: 10.1166/jnn.2011.3173.
Organic photovoltaic cells (OPVs) with a highly conductive poly 3,4-ethylenedioxythiophene:poly styrenesulfonate (PEDOT:PSS) layer as an anode and that were modified with the addition of some organic solvents such as sorbitol (So), dimethyl sulfoxide (DMSO), N-methyl-pyrrolidone (NMP), dimethylformamide (DMF), and ethylene glycol (EG) were fabricated without the use of transparent conducting oxide (TCO). The conductivity of the PEDOT:PSS film that was modified with each additive was enhanced by three orders of magnitude. According to the atomic force microscopy (AFM) study, the conductivity enhancement might have been related to the better connections between the conducting PEDOT chains. The TCO-free solar cells with a modified PEDOT:PSS layer and an active layer composed of poly (3-hexylthiophene) (P3HT) and phenyl [6, 6] C61 butyric acid methyl ester (PCBM) performed as well as the indium-tin-oxide (ITO)-based organic solar cells. The power conversion efficiency (PCE) of the organic solar cells with a DMSO-, So + DMSO-, and EG-modified PEDOT:PSS layer reached 3.51, 3.64, and 3.77%, respectively, under an illumination of AM 1.5 (100 mW/cm2).
制备了以高导电性聚3,4 - 乙撑二氧噻吩：聚苯乙烯磺酸盐（PEDOT:PSS）层作为阳极且添加了山梨醇（So）、二甲基亚砜（DMSO）、N - 甲基吡咯烷酮（NMP）、二甲基甲酰胺（DMF）和乙二醇（EG）等有机溶剂进行改性的有机光伏电池（OPV），且未使用透明导电氧化物（TCO）。用每种添加剂改性后的PEDOT:PSS薄膜的电导率提高了三个数量级。根据原子力显微镜（AFM）研究，电导率的提高可能与导电的PEDOT链之间更好的连接有关。具有改性PEDOT:PSS层和由聚（3 - 己基噻吩）（P3HT）和苯基[6,6]C61丁酸甲酯（PCBM）组成的活性层的无TCO太阳能电池的性能与基于铟锡氧化物（ITO）的有机太阳能电池相当。在AM 1.5（100 mW/cm²）光照下，具有DMSO -、So + DMSO - 和EG - 改性PEDOT:PSS层的有机太阳能电池的功率转换效率（PCE）分别达到3.51%、3.64%和3.77%。
