Abstract The inorganic carrier transport layers are robust and stable to the environment compared to the organic hole transport layer (HTL). Here, we report on the fabrication of the halide perovskite solar cells (HaPSCs) employing CuI deposited with ammoniated aqueous solution ink as HTL and explored the material properties and device characteristics. The film morphology of CuI is found to have an influence on the HaP film growth and hence effects on the device parameters. The HaPSC with CuI has demonstrated the power conversion efficiency of ~14.21% with high reproducibility. The capacitance spectra analysis shows that the deep trap states are induced in the perovskite absorber layer. The results obtained from the temperature-dependent open circuit voltage implicates that the recombination activities in the perovskite bulk are dominant. Furthermore, the HaPSC with CuI has revealed better air stability compared to the device with PEDOT:PSS. This work suggests that the CuI processed with aqueous precursor is a promising alternative HTL to PEDOT:PSS for efficient and stable perovskite solar cells as well as in a tandem device.

中文翻译：

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氨化水性前驱体油墨加工碘化铜作为倒置平面钙钛矿太阳能电池的空穴传输层

摘要 与有机空穴传输层 (HTL) 相比，无机载流子传输层对环境更加坚固和稳定。在这里，我们报告了使用以氨化水溶液墨水沉积的 CuI 作为 HTL 的卤化物钙钛矿太阳能电池 (HaPSC) 的制造，并探索了材料特性和器件特性。发现 CuI 的膜形态对 HaP 膜生长有影响，因此对器件参数有影响。带有 CuI 的 HaPSC 已经证明了~14.21% 的功率转换效率和高重现性。电容谱分析表明，在钙钛矿吸收层中诱发了深陷阱态。从温度相关的开路电压获得的结果表明钙钛矿体中的复合活动占主导地位。此外，与带有 PEDOT:PSS 的设备相比，带有 CuI 的 HaPSC 显示出更好的空气稳定性。这项工作表明，用水性前体处理的 CuI 是 PEDOT:PSS 的有前途的 HTL 替代品，可用于高效和稳定的钙钛矿太阳能电池以及串联装置。