Panda Debendra Prasad, Issaoui Rabeb, Iqbal Zafar, Grandhi G Krishnamurthy, Ur Rehman Muhammad Okash, Zu Fengshuo, Alippi Paola, Rastgoo Madineh, Zuo Shengnan, Luzzi Enrica, Simmonds Maxim, Miele Lorenzo, Sanguigno Luigi, Li Meng, Aprea Paolo, Di Maio Ernesto, Koch Norbert, Vivo Paola, Abate Antonio
Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, 80125 Naples, Italy.
Helmholtz-Zentrum Berlin für Materialien und Energie (HZB), Hahn-Meitner-Platz 1, 14109 Berlin, Germany.
ACS Energy Lett. 2025 Jul 14;10(8):3789-3798. doi: 10.1021/acsenergylett.5c01581. eCollection 2025 Aug 8.
Indoor photovoltaic (IPV) technology has emerged as an effective strategy to sustainably power batteryless Internet of Things (IoT) devices. Though tin perovskite solar cells offer competitive IPV performance, their effectiveness is often compromised by Sn oxidation, particularly when processed with dimethyl sulfoxide (DMSO) solvent. This work explored the IPV performance of DMSO-free tin perovskites FASnI Br by tuning the halide composition. Notably, X-ray photoelectron spectroscopy confirms no traces of Sn, highlighting the critical role of eliminating DMSO. Under 1000 lx indoor illumination, the power conversion efficiency (PCE) increases with Br content, reaching a maximum of 11.1% for FASnIBr without introducing any reducing agent. Remarkably, after six months of storage, it exhibited an impressive indoor PCE of 11.9%, demonstrating the effectiveness of the DMSO-free processing route for the intrinsic stability of the tin perovskite. These findings provide crucial insights for developing high-performance, lead-free perovskite materials for sustainable energy applications and IoT devices.
室内光伏（IPV）技术已成为一种为无电池物联网（IoT）设备可持续供电的有效策略。尽管锡基钙钛矿太阳能电池具有具有竞争力的IPV性能，但其有效性常常因锡氧化而受到影响，尤其是在用二甲基亚砜（DMSO）溶剂处理时。这项工作通过调整卤化物组成来探索无DMSO的锡基钙钛矿FASnI Br的IPV性能。值得注意的是，X射线光电子能谱证实没有锡的痕迹，突出了消除DMSO的关键作用。在1000勒克斯的室内光照下，功率转换效率（PCE）随溴含量增加，对于不含任何还原剂的FASnIBr，PCE最高可达11.1%。值得注意的是，储存六个月后，其室内PCE达到了令人印象深刻的11.9%，证明了无DMSO处理路线对锡基钙钛矿固有稳定性的有效性。这些发现为开发用于可持续能源应用和物联网设备的高性能无铅钙钛矿材料提供了关键见解。
