Lead Oxalate-Induced Nucleation Retardation for High-Performance Indoor and Outdoor Perovskite Photovoltaics.,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Lead Oxalate-Induced Nucleation Retardation for High-Performance Indoor and Outdoor Perovskite Photovoltaics.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-12-24 , DOI: 10.1021/acsami.9b18230
Chong Dong ₁ , Meng Li ₁ , Yue Zhang ₁ , Kai-Li Wang ₁ , Shuai Yuan ₁ , Femi Igbari ₁ , Yingguo Yang ₂ , Xingyu Gao ₂ , Zhao-Kui Wang ₁ , Liang-Sheng Liao ₁

Affiliation

Perovskite solar cells have attracted worldwide attention as one of the key research areas in the field of thin-film photovoltaics. Although they exhibit easy solution processability, it is important to effectively control the crystallization of the light-absorbing layer, which affects the performance and stability of devices. Here, we present lead oxalate (PbC2O4) as a nonhalide lead constituent of the perovskite precursor solution, which contributes to anion replacement during thin film annealing. This strategy limits the perovskite nucleation rate and retards crystallization. As a result, we achieved excellent perovskite films with larger grains and fewer defects. The open-circuit voltage of the optimal device under 1 sun illumination rose to 1.12 V with a power conversion efficiency (PCE) of 20.20%. In addition, the indoor PCE at 1000 lux can reach 34.86%. This nonhalide lead compound dopant provides a guide for the crystallization of perovskite materials and paves a way for the fabrication of nonhalide perovskite solar cells.

中文翻译：

草酸铅诱导的核缓凝作用，用于高性能的室内和室外钙钛矿光伏发电。

钙钛矿太阳能电池作为薄膜光伏领域的关键研究领域之一，已经引起了全世界的关注。尽管它们显示出容易的溶液可加工性，但是有效控制光吸收层的结晶很重要，这会影响器件的性能和稳定性。在这里，我们提出草酸铅（PbC2O4）作为钙钛矿前体溶液的非卤化物铅成分，这有助于薄膜退火过程中的阴离子置换。该策略限制了钙钛矿的成核速率并延迟了结晶。结果，我们获得了具有更大晶粒和更少缺陷的优质钙钛矿薄膜。最佳器件在1个阳光照射下的开路电压升至1.12 V，功率转换效率（PCE）为20.20％。此外，1000 lux的室内PCE可以达到34.86％。这种非卤化物铅化合物掺杂剂为钙钛矿材料的结晶提供了指南，并为非卤化物钙钛矿太阳能电池的制造铺平了道路。

更新日期：2019-12-25

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南