Minimized surface deficiency on wide-bandgap perovskite for efficient indoor photovoltaics

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

Detail(s)

Original languageEnglish
Article number105377
Journal / PublicationNano Energy
Volume78
Online published13 Sep 2020
Publication statusOnline published - 13 Sep 2020

Abstract

Wide-bandgap perovskite solar cells (PVSCs) possess significant potential in providing reliable power sources for applications in the Internet of Things (IoT) ecosystem under indoor light illumination. However, the wide-bandgap PVSCs usually suffer from photo-induced phase segregation and non-radiative energy loss caused by the Shockley-Read-Hall (SRH) type trap-assisted recombination at the interfaces in the devices. To address these issues, a simple strategy by applying phenethylammonium halides to reduce the energy loss and suppress the phase segregation of wide-bandgap PVSCs is developed. The devices incorporated with phenethylammonium chloride (PEACl) is revealed to achieve a high open-circuit voltage (VOC) of 1.26 V, leading to a merit power conversion efficiency (PCE) of 18.3%, which is the best performance among the inverted wide-bandgap PVSCs (~1.75 eV) under one sun illumination. Meanwhile, the photovoltaic performance of the device is also significantly enhanced, especially under a white light-emitting diode (LED) with an illumination of 1000 lux, showing a PCE of 35.6% with a high VOC of 1.08 V. Impressively, the device delivers a minimum energy loss of 670 meV, which is among the smallest value reported for perovskite-based indoor photovoltaics.

Research Area(s)

  • Defect passivation, Indoor light application, Minimized energy loss, Phase segregation suppression, Wide-bandgap perovskite photovoltaic

Citation Format(s)

Minimized surface deficiency on wide-bandgap perovskite for efficient indoor photovoltaics. / Li, Zhen; Zhang, Jie; Wu, Shengfan; Deng, Xiang; Li, Fengzhu; Liu, Danjun; Lee, Chia‐Chen; Lin, Francis; Lei, Dangyuan; Chueh, Chu-Chen; Zhu, Zonglong; Jen, Alex K.-Y.

In: Nano Energy, Vol. 78, 105377, 12.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal