Diniz Araújo Vívian Helene, Nogueira Ana Flávia, Tristão Juliana Cristina, Dos Santos Leandro José
Universidade Federal de Viçosa - Campus Florestal, UFV Rodovia LMG 818, km 06, s/n, Campus Universitário Florestal MG Brazil
Universidade Estadual de Campinas, UNICAMP, Cidade Universitária Zeferino Vaz Campinas SP Brazil.
RSC Adv. 2024 Apr 4;14(16):10930-10941. doi: 10.1039/d4ra00634h. eCollection 2024 Apr 3.
One of the challenges hindering the commercialization of perovskite solar cells (PSCs) is the presence of toxic metals such as lead in their composition. Simulation studies using SCAPS-1D have already been conducted on lead-free PSCs to find optimized solar cell parameters, having tin as the primary candidate for replacing lead in perovskites. Here, we used fullerene-C and its derivative PCBM as interlayers in a lead-free tin-based PSC between the ETL (ZnO) and the perovskite MASI in both regular and inverted configurations of PSCs using SCAPS-1D software. To the best of our knowledge, this is the first simulation study reporting the impact of using fullerene-C and PCBM as interlayers in lead-free PSCs. The defect density () of the perovskite material is varied, allowing us to observe its influence on the power conversion efficiency (PCE). Using an value of 10 cm without the interlayer, the PCE was 6.90% and 3.72% for regular and inverted devices. Using PCBM as an interlayer improves the efficiency of both simulated PSCs, achieving a maximum PCE of 8.11% and 5.26% for the regular and inverted configurations, respectively. Decreasing the from 10 cm to 10 cm caused a significant increase in efficiency, reaching 13.38% (n-i-p) and 10.00% (p-i-n). Finally, using the optimized parameters and an ideal value (10 cm), both PSCs achieved a PCE close to 30%.
阻碍钙钛矿太阳能电池（PSC）商业化的挑战之一是其成分中存在铅等有毒金属。已经使用SCAPS-1D对无铅PSC进行了模拟研究，以寻找优化的太阳能电池参数，其中锡是替代钙钛矿中铅的主要候选材料。在这里，我们使用富勒烯-C及其衍生物PCBM作为无铅锡基PSC中ETL（ZnO）和钙钛矿MASI之间的中间层，采用SCAPS-1D软件对PSC的常规和倒置结构进行研究。据我们所知，这是第一项报道在无铅PSC中使用富勒烯-C和PCBM作为中间层影响的模拟研究。改变钙钛矿材料的缺陷密度（），使我们能够观察其对功率转换效率（PCE）的影响。在没有中间层的情况下，使用10 cm的 值，常规和倒置器件的PCE分别为6.90%和3.72%。使用PCBM作为中间层提高了两种模拟PSC的效率，常规和倒置结构的最大PCE分别达到8.11%和5.26%。将 从10 cm降低到10 cm导致效率显著提高，分别达到13.38%（n-i-p）和10.00%（p-i-n）。最后，使用优化参数和理想的 值（10 cm），两种PSC的PCE均接近30%。
