Makming Piyapond, Homnan Saowalak, Ngamjarurojana Athipong, Rimjaem Sakhorn, Gardchareon Atcharawon, Sagawa Takashi, Haruta Mitsutaka, Pakawatpanurut Pasit, Wongratanaphisan Duangmanee, Kanjanaboos Pongsakorn, Intaniwet Akarin, Ruankham Pipat
School of Renewable Energy, Maejo University, San Sai District, Chiang Mai 50290, Thailand.
Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.
ACS Appl Mater Interfaces. 2023 Mar 29;15(12):15486-15497. doi: 10.1021/acsami.2c23136. Epub 2023 Mar 20.
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 (CsFAPb(IBr)) 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.
钙钛矿太阳能电池（PSCs）是一项具有巨大潜力的创新技术，能够提供经济高效且高性能的将光转化为电能的器件，可用于户外和室内应用。在本研究中，通过将铜酞菁（CuPc）分子混入硫氰酸亚铜（CuSCN）薄膜中制备了一种新型空穴传输层（HTL），并将其应用于以铯/甲脒（CsFAPb(IBr)）作为光吸收剂的碳基PSCs。在最佳浓度下，在AM1.5G测试条件下实现了15.01%的高功率转换效率（PCE），在1000勒克斯的低光照条件下获得了32.1%的PCE。研究发现，混合的CuPc:CuSCN HTL有助于降低陷阱密度，改善钙钛矿/HTL界面以及HTL/碳界面。此外，基于混合CuPc:CuSCN HTL的PSCs由于CuPc材料的疏水性在1年以上表现出更好的稳定性。另外，在85°C下测试了热稳定性，器件在1000小时后平均效率下降约为初始PCE值的50%。还检查了紫外光稳定性，结果显示在70分钟的曝光后平均效率下降为初始值的40%。此处介绍的工作代表了PSCs实际应用的重要一步，因为它为开发适用于户外和室内应用的经济高效、稳定且高性能的PSCs铺平了道路。
