Poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is widely utilized as the hole transport layer (HTL) inorganic photovoltaics (OPVs) because of its low‐temperature solution processing peculiarity, high optical transmittance, and excellent mechanical flexibility. However, the core–shell structure of PSS coated PEDOT results in relatively low conductivity, work function, transmittance and waterproofness of PEDOT:PSS interlayer, limiting the photovoltaic performance and stability of OPVs. Here, the conformation of PEDOT chains are regulated from helical benzoyl to linear quinone structure via incorporation of 2D Cd0.85PS3Li0.15H0.15dopant into the conventional PEDOT:PSS interlayer, promoting an interpenetrating network structure in PEDOT:PSS interlayer and forming an efficient hole transport channel from active layer to ITO electrode. Such features significantly improve the electrical conductivity, work function, and transmittance of PEDOT:PSS interlayer. In consequence, the maximum power conversion efficiency (PCE) of D18:L8‐BO, PBDB‐T:ITIC, as well as PTzBI‐dF:L8‐BO based OPVs ameliorated from 18.37%, 8.94%, and 15.80% to 19.26%, 10.00%, and 16.83%, respectively. The application of Cd0.85PS3Li0.15H0.15 doping PEDOT:PSS strategy demonstrates great potential for the development of strongly conductive, large‐work‐function, highly transparent, and excellent‐waterproof PEDOT:PSS interlayer toward highly efficient and stable OPVs.

中文翻译：

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PEDOT 链的微调构象可同时增强 PEDOT：PSS 中间膜的导电性、功函数、透射率和防水性，从而实现高效和稳定的有机光伏


聚（3,4-乙烯二氧噻吩）:p酰苯乙烯磺酸盐）（PEDOT：PSS）因其低温溶液加工特性、高透光率和优异的机械柔韧性而被广泛用作空穴传输层 （HTL） 无机光伏 （OPV）。然而，PSS 涂层 PEDOT 的核壳结构导致 PEDOT：PSS 中间膜的导电性、功函数、透射率和防水性相对较低，限制了 OPV 的光伏性能和稳定性。在这里，通过将 2D Cd0.85PS3Li0.15H0.15 掺杂剂掺入常规 PEDOT：PSS 夹层中，促进 PEDOT：PSS 夹层中的互穿网络结构并形成从活性层到 ITO 电极的有效空穴传输通道，从 PEDOT：PSS 夹层中调节 PEDOT 链的构象到线性醌结构。这些特性显著提高了 PEDOT：PSS 中间膜的导电性、功函数和透射率。因此，基于 D18：L8-BO、PBDB-T：ITIC 以及基于 PTzBI-dF：L8-BO 的 OPV 的最大功率转换效率 （PCE） 分别从 18.37%、8.94% 和 15.80% 提高到 19.26%、10.00% 和 16.83%。Cd0.85PS3Li0.15H0.15 掺杂 PEDOT：PSS 策略的应用表明，面向高效、稳定的 OPV 开发强导电、大功能、高透明和优异防水的 PEDOT：PSS 中间膜具有巨大潜力。