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Photoelectric Conversion and Device Stability of PM6:PY-IT Solar Cells Based on a Water Solution-Processed MoO3 Hole Transport Layer
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-06-02 , DOI: 10.1021/acsami.3c04678 Rong Hu 1 , Zijie Xiao 2 , Yurong Liu 1 , Yongyao Su 1 , Chaozhong Guo 1 , Zhe Chen 3 , Cuihong Liu 2 , Wei Zhang 2
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-06-02 , DOI: 10.1021/acsami.3c04678 Rong Hu 1 , Zijie Xiao 2 , Yurong Liu 1 , Yongyao Su 1 , Chaozhong Guo 1 , Zhe Chen 3 , Cuihong Liu 2 , Wei Zhang 2
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To enhance the power conversion efficiency (PCE) and stability of all-polymer solar cells (all-PSCs), a new precursor solution based on an in situ chemical reaction of nanomolybdenum powder (Mo), hydrogen peroxide (H2O2), and ammonia (NH3·H2O) was developed for preparing a MoO3 hole transport layer (HTL) for all-PSCs. The results showed that the PCE and stability of PM6:PY-IT solar cells based on the MoO3 HTL were better than those based on a PEDOT:PSS layer. To further understand the relationship between the HTL and the device performance, ultrafast photophysical processes of all-PSCs based on different HTLs were contrastively analyzed. Our research indicated that the micromorphology of active layers could be influenced by the interfacial layer material, consequently determining the photoelectric conversion process of all-PSCs. The MoO3-based all-PSCs had longer charge lifetime, higher charge mobility, and lower charge recombination characteristics compared with the devices based on the PEDOT:PSS layer during the operation time. As a result, the MoO3-based PM6:PY-IT solar cells achieved an initial PCE of 15.2%, and they still maintained more than 80% of their initial efficiency after 1000 h.
中文翻译：
基于水溶液处理的 MoO3 空穴传输层的 PM6:PY-IT 太阳能电池的光电转换和器件稳定性
为了提高全聚合物太阳能电池（all-PSC）的功率转换效率（PCE）和稳定性，基于纳米钼粉（Mo）、过氧化氢（H 2 O 2）的原位化学反应的新型前体溶液，开发了氨（NH 3 ·H 2 O）用于制备用于全PSC的MoO 3空穴传输层（HTL）。结果表明，基于MoO 3的PM6:PY-IT太阳能电池的PCE和稳定性HTL 优于基于 PEDOT:PSS 层的那些。为了进一步了解 HTL 与器件性能之间的关系，对比分析了基于不同 HTL 的全 PSC 的超快光物理过程。我们的研究表明，活性层的微观形态可能会受到界面层材料的影响，从而决定全PSC的光电转换过程。与基于PEDOT:PSS层的器件相比，基于MoO 3的全PSCs在工作时间内具有更长的电荷寿命、更高的电荷迁移率和更低的电荷复合特性。因此，MoO 3基于 PM6:PY-IT 的太阳能电池的初始 PCE 为 15.2%，并且在 1000 小时后仍保持其初始效率的 80% 以上。
更新日期：2023-06-02
中文翻译：
基于水溶液处理的 MoO3 空穴传输层的 PM6:PY-IT 太阳能电池的光电转换和器件稳定性
为了提高全聚合物太阳能电池（all-PSC）的功率转换效率（PCE）和稳定性，基于纳米钼粉（Mo）、过氧化氢（H 2 O 2）的原位化学反应的新型前体溶液，开发了氨（NH 3 ·H 2 O）用于制备用于全PSC的MoO 3空穴传输层（HTL）。结果表明，基于MoO 3的PM6:PY-IT太阳能电池的PCE和稳定性HTL 优于基于 PEDOT:PSS 层的那些。为了进一步了解 HTL 与器件性能之间的关系，对比分析了基于不同 HTL 的全 PSC 的超快光物理过程。我们的研究表明，活性层的微观形态可能会受到界面层材料的影响，从而决定全PSC的光电转换过程。与基于PEDOT:PSS层的器件相比，基于MoO 3的全PSCs在工作时间内具有更长的电荷寿命、更高的电荷迁移率和更低的电荷复合特性。因此，MoO 3基于 PM6:PY-IT 的太阳能电池的初始 PCE 为 15.2%，并且在 1000 小时后仍保持其初始效率的 80% 以上。
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