In this paper, a 64 mm×64 mm matrix polymer solar cell (PSC) was fabricated by air-brush spray deposition. Although the open-circuit voltage (Voc) and the fill factor (FF) both need to be improved, the efficiency of matrix PSCs still reaches about 1.82%, and especially the current density achieves nearly 20 mA/cm². The results verify that air-brush spray deposition is a suitable method to prepare large area PSC devices, and the process we use in this paper can be easily transplanted to roll-to-roll production.

In this paper, bulk heterojunction solar cells with poly-(3-hexylthiophene) (P3HT): [6,6]-phenyl-C61-butyric-acid-methylester (PCBM) as an active layer and modified poly (3,4- ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) as a buffer layer are fabricated. The buffer layer is modified by adding 1% to 5% dimethyl sulfoxide (DMSO) into PEDOT: PSS solution before spin-coating. The conductivity of modified PEDOT:PSS and the performance of solar cells with modified PEDOT:PSS are measured. The highest conductivity of modified PEDOT:PSS with 4% DMSO can achieve 89.693 S/cm. The performance of organic solar cell with PEDOT:PSS modified by 4% DMSO is the best. The 4% DMSOmodified- PEDOT:PSS cell has a power conversion efficiency of 3.34% , V_oc of 5.7 V, J_sc of 14.56 mA/cm2 and filling factor (FF) of 40.34%.

采用喷涂法分别制备了基于P3HT∶PCBM体异质结和P3HT∶PCBM∶QDs体异质结光活性层的有机太阳能电池器件, 并对其光电响应进行了表征和对比。 同时采用光谱手段对两者的光活性层进行对比分析。 实验结果表明, 量子点的加入拓宽了薄膜吸收光谱, 同时增强了光致电子转移过程, 从而改善了器件的光谱响应; 双源共喷制备的P3HT∶PCBM∶QDs体异质结器件转化效率比同样是喷涂制备的P3HT∶PCBM体异质结提高了25%。