Effects of Cu, K and Guanidinium Addition to CH3NH3PbI3 Perovskite Solar Cells
Effects of Cu, K and Guanidinium Addition to CH3NH3PbI3 Perovskite Solar Cells
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DOI：
10.1007/s11664-022-09688-3
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发表时间：
2022-05
影响因子：
2.1
通讯作者：
Ayu Enomoto;A. Suzuki;T. Oku;Masanobu Okita;Sakiko Fukunishi;Tomoharu Tachikawa;T. Hasegawa
中科院分区：
文献类型：
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作者：
Ayu Enomoto;A. Suzuki;T. Oku;Masanobu Okita;Sakiko Fukunishi;Tomoharu Tachikawa;T. Hasegawa
在这项研究中，CH3NH3PbI3钙钛矿太阳能电池添加铜（Cu）和钾（K）或胍（GA）的制造和表征。研究了添加剂对薄膜光伏性能、形貌和晶体结构的影响，并讨论了薄膜的电子结构和热力学稳定性。通过在立方晶体中的铅位引入Cu，在CH3NH3有机阳离子位引入K或GA，提高了钙钛矿太阳能电池的稳定性和转换效率。同时向钙钛矿晶体中添加Cu和K抑制了晶体通过甲铵（MA）的解吸而分解，这导致光伏器件的稳定性提高。在28天后，具有共添加的Cu和K的装置的转换效率仍为10.8%，而标准装置的转换效率下降至10.1%。
In this study, CH3NH3PbI3perovskite solar cells with added copper (Cu) and potassium (K) or guanidinium (GA) were fabricated and characterized. The effects of the additives on the photovoltaic properties, morphology and crystalline structure were investigated, and the electronic structures and thermodynamic stabilities are discussed. The stability and conversion efficiency of the perovskite solar cell improved by incorporating Cu at the lead site and K or GA at the CH3NH3organic cation site in the cubic crystal. Simultaneous addition of Cu and K to the perovskite crystal suppressed decomposition of the crystal by desorption of methylammonium (MA), which led to improvement of the stability of the photovoltaic device. After 28 days, the conversion efficiency of the device with co-added Cu and K was still 10.8%, whereas that of the standard device decreased to 10.1%.