TY - JOUR
T1 - Minimized surface deficiency on wide-bandgap perovskite for efficient indoor photovoltaics
AU - LI, Zhen
AU - ZHANG, Jie
AU - WU, Shengfan
AU - DENG, Xiang
AU - LI, Fengzhu
AU - Liu, Danjun
AU - LEE, Chia‐Chen C.
AU - LIN, Francis
AU - LEI, Dangyuan
AU - CHUEH, Chu Chen
AU - ZHU, Zonglong
AU - JEN, Alex K.Y.
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/12
Y1 - 2020/12
N2 - 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.
AB - 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.
KW - Defect passivation
KW - Indoor light application
KW - Minimized energy loss
KW - Phase segregation suppression
KW - Wide-bandgap perovskite photovoltaic
UR - http://www.scopus.com/inward/record.url?scp=85091206671&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2020.105377
DO - 10.1016/j.nanoen.2020.105377
M3 - Journal Article (refereed)
SN - 2211-2855
VL - 78
JO - Nano Energy
JF - Nano Energy
M1 - 105377
ER -
