用于室内应用的混合 CuPc:CuSCN 空穴传输层实现的高效稳定的碳基钙钛矿太阳能电池,ACS Applied Materials & Interfaces

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用于室内应用的混合 CuPc:CuSCN 空穴传输层实现的高效稳定的碳基钙钛矿太阳能电池
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2023-03-20 , DOI: 10.1021/acsami.2c23136
Piyapond Makming ₁ , Saowalak Homnan ₂ , Athipong Ngamjarurojana _{2,

3} , Sakhorn Rimjaem _{2,

3,

4} , Atcharawon Gardchareon _{2,

3} , Takashi Sagawa ₅ , Mitsutaka Haruta ₆ , Pasit Pakawatpanurut ₇ , Duangmanee Wongratanaphisan _{2,

3,

4} , Pongsakorn Kanjanaboos ₈ , Akarin Intaniwet ₁ , Pipat Ruankham _{2,

3,

4}

Affiliation

钙钛矿太阳能电池 (PSC) 是一种创新技术，具有巨大的潜力，可以提供具有成本效益的高性能设备，将光能转化为电能，可用于室外和室内应用。在这项研究中，通过将铜酞菁 (CuPc) 分子混合到硫氰酸铜 (I) (CuSCN) 薄膜中创建了一种新型空穴传输层 (HTL)，并将其应用于具有铯/甲脒 (Cs 0.17 FA) 的碳_基PSC _0.83 Pb(I _0.83 Br _0.17 ) ₃) 作为光吸收剂。在最佳浓度下，在AM1.5G测试条件下获得了15.01%的高功率转换效率（PCE），在弱光1000勒克斯条件下获得了32.1%的PCE。发现混合的 CuPc:CuSCN HTL 有助于降低陷阱密度并改善钙钛矿/HTL 界面以及 HTL/碳界面。此外，由于 CuPc 材料的疏水性，基于混合 CuPc:CuSCN HTL 的 PSC 在 1 年内提供了更好的稳定性。此外，在 85 °C 下测试了热稳定性，在 1000 小时后，器件的平均效率下降了初始 PCE 值的约 50%。还检查了 UV 光稳定性，结果显示，观察到暴露 70 分钟后，平均效率下降了初始值的 40%。

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Efficient and Stable Carbon-Based Perovskite Solar Cells Enabled by Mixed CuPc:CuSCN Hole Transporting Layer for Indoor Applications

Perovskite solar cells (PSCs) are an innovative technology with great potential to offer cost-effective and high-performance devices for converting light into electricity that can be used for both outdoor and indoor applications. In this study, a novel hole-transporting layer (HTL) was created by mixing copper phthalocyanine (CuPc) molecules into a copper(I) thiocyanate (CuSCN) film and was applied to carbon-based PSCs with cesium/formamidinium (Cs_0.17FA_0.83Pb(I_0.83Br_0.17)₃) as a photoabsorber. At the optimum concentration, a high power conversion efficiency (PCE) of 15.01% was achieved under AM1.5G test conditions, and 32.1% PCE was acquired under low-light 1000 lux conditions. It was discovered that the mixed CuPc:CuSCN HTL helps reduce trap density and improve the perovskite/HTL interface as well as the HTL/carbon interface. Moreover, the PSCs based on the mixed CuPc:CuSCN HTL provided better stability over 1 year due to the hydrophobicity of CuPc material. In addition, thermal stability was tested at 85 °C and the devices achieved an average efficiency drop of approximately 50% of the initial PCE value after 1000 h. UV light stability was also examined, and the results revealed that the average efficiency drop of 40% of the initial value for 70 min of exposure was observed. The work presented here represents an important step toward the practical implementation of the PSC as it paves the way for the development of cost-effective, stable, yet high-performance PSCs for both outdoor and indoor applications.

更新日期：2023-03-20

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