Opportunities of copper addition in CH3NH3PbI3 perovskite and their photovoltaic performance evaluation
Opportunities of copper addition in CH3NH3PbI3 perovskite and their photovoltaic performance evaluation
复制标题
DOI：
10.1016/j.jallcom.2021.162626
复制
发表时间：
2021-11-12
影响因子：
6.2
通讯作者：
Mallick, Tapas K.
中科院分区：
文献类型：
--
作者：
Khalid, Maria;Roy, Anurag;Mallick, Tapas K.
在短短几年内提供一种简单、廉价和清洁的能源的努力中，钙钛矿型太阳能电池(PSC)在其发电转换效率(PCE)方面取得了迅猛的发展。最有效的PSCs是用CH3NH3PbI3(MAPbI(3))钙钛矿制备的。然而，作为MAPbI(3)试验的一种很有前途的光伏性能，铅的毒性和较差的稳定性阻碍了光伏技术的发展。在这方面，用一些环境友好的、更便宜的、与光电性能相似的替代材料或元素来取代铅是非常必要的。在本工作中，我们尝试了在钙钛矿MAPbI(3)中加入铜，通过一些奇异的方式来替代铅，即用铜完全置换铅，生成MAPB(1-x)Cu(X)I(3)(1=2)；部分铅置换，即MAPB(1-x)Cu(X)I(3)；以及鸡尾酒钙钛矿，即MAPbI(3)和Macu(X)I(3)的混合物，最终将它们用于碳基钙钛矿太阳能电池。值得注意的是，铜的掺入促进了近红外(NIR)的吸收，表明了最大的太阳光谱吸收。在MAPB(1-x)Cux(X)I(3)中加入Cu2+，得到的最大PCE接近12.85%，而使用MAPbI(3)和Macu(X)I(3)的1：1混合钙钛矿溶液，平均PCE接近12.43%。另一方面，在完全铅取代的钙钛矿材料Macu(X)I(3)中，器件仅经历了类似于4.0%的平均PCE。然而，基于Macu(X)I(3)的PSCs导致PCE的降解可以忽略不计，直到1000小时，而基于铅的其他器件在同一时期经历了PCE的快速耗尽。值得注意的是，与铅基PSCs相比，掺铜有利于PCE相对陡峭和较小的降解速率。这些结果可能有助于开发基于无铅的高度稳定的太阳能电池的潜在应用的无限可能性，并突出了向近红外路线广泛吸收太阳能和增强器件稳定性的机会。此外，铜的使用还具有环境友好、地球丰度高、热稳定性和水稳定性好等优点。(C)2021年爱思唯尔B.V.保留所有权利。
Perovskite solar cells (PSCs) have encountered a fulgurant development in their power-conversion efficiency (PCEs) generation in the drive to provide a facile, cheap and clean source of energy over just a few years. The most efficient PSCs are fabricated using CH3NH3PbI3 (MAPbI(3)) perovskite. However, being a promising photovoltaic (PV) performance piloted by MAPbI(3), Pb-toxicity and poor stability obstructs the progress of PSCs in PV technology. In this regard, replacing Pb with some environmentally friendly, cheaper, and similar optoelectronic behaviour related alternative material or element is highly desirable. In this work, an attempt was made on copper as Cu (I) addition in the perovskite, MAPbI(3) through some exotic ways in an intention of Pb replacement, i.e., complete Pb replacement with Cu, which generates MACu(x)I(3) (1 = 2); partial lead replacement, i.e., MAPb(1-x)Cu(x)I(3); and cocktail perovskite, i.e., both MAPbI(3) and MACu(x)I(3) mixture, and finally they are employed for carbon-based perovskite solar cells. Remarkably, Cu incorporation facilitates the near-infrared (NIR) absorption, indicating a maximum solar spectrum absorbance. Integration of Cu as MAPb(1-x)Cu(x)I(3) results in the maximum PCE of similar to 12.85%, whereas using 1:1 cocktail perovskite solution of MAPbI(3) and MACu(x)I(3) exhibits an average PCE of similar to 12.43%. On the other hand, during complete Pb substituted perovskites, MACu(x)I(3), the device has only experienced an average PCE of similar to 4.0%. However, MACu(x)I(3)-based PSCs lead to negligible PCE degradation as perceived up to 1000 h, whereas Pb-based other devices are experienced rapid PCE depletion over the same period. Noticeably, Cu-incorporation facilitates a comparatively steeper and lesser PCE degradation rate than Pb-based PSCs. These results may help exploit unlimited possibilities of the potential application of Pb-free based highly stable solar cells and highlights the opportunities for broad solar absorption towards the NIR route and enhanced device stability. Besides, Cu employment has the advantages of environmentally benign impact, earth abundance, good thermal and aqueous stability. (C) 2021 Elsevier B.V. All rights reserved.