Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) hole contact is widely used in organic solar cells (OSCs). In this work, we report the effort to develop a versatile solution-processed molybdenum trioxide (s-MoO₃)/Au nanoparticles (NPs)/s-MoO₃ (MAM) hole contact for application in PEDOT:PSS-free OSCs. The use of Au NPs is to improve the adhesion between the two s-MoO₃ layers in the MAM hole contact. It shows that MAM hole contact enables to enhance the charge extraction through suppression of bimolecular recombination, and reduce the leakage current by improvement of contact property. Power conversion efficiency of 7.68% was obtained for MAM-based OSCs, with a blend system of poly[[4,8-bis[(2-ethylhexyl) oxy]benzo[1,2-b: 4,5-b’] dithiophene-2,6-diyl] [3-fluoro-2-[(2-ethylhexyl) carbonyl] thieno[3,4-b]-thiophenediyl]]: [6,6]- phenyl-C70-butyric-acid-methyl-ester, which is comparable to that of the PEDOT:PSS-based cells (7.48%). It demonstrates clearly that solution-processed MAM hole contact can be readily adopted to replace the widely used acidic PEDOT:PSS hole contact for application in PEDOT:PSS-free OSCs.

聚（3,4-乙撑二氧噻吩）-聚（苯乙烯磺酸盐）（PEDOT：PSS）空穴接触广泛用于有机太阳能电池（OSC）。在这项工作中，我们报告了开发通用溶液处理的三氧化钼（s-MoO ₃）/金纳米颗粒（NPs）/ s-MoO ₃（MAM）孔触点以用于PEDOT：不含PSS的OSC的努力。Au NPs的使用是为了改善两个s-MoO ₃之间的附着力MAM孔接触中的金属层。结果表明，MAM空穴接触可通过抑制双分子重组来增强电荷提取，并通过改善接触性能来降低漏电流。对于基于MAM的OSC，使用聚[[4,8-双[（2-乙基己基）氧基]苯并[1,2-b：4,5-b']的共混体系二噻吩-2,6-二基] [3-氟-2-[（2-乙基己基）羰基]噻吩并[3,4- b ]-噻吩二基]]：[6,6]-苯基-C70-丁酸-甲基酯，与基于PEDOT：PSS的电池相当（7.48％）。它清楚地表明，溶液处理的MAM孔触头可以很容易地代替广泛使用的酸性PEDOT：PSS孔触头，用于无PEDOT：PSS的OSC。