TY - GEN
T1 - Cryo-controlled Nucleation Method for High-efficiency Perovskite Solar Cells
AU - Ng, Annie
AU - Ren, Zhiwei
AU - Shen, Qian
AU - Cheung, Sin Hang
AU - Djurišic, Aleksandra B.
AU - Su, Shu Kong
AU - Li, Gang
AU - Surya, Charles
N1 - Funding Information:
The work was supported by the Clarea Au Endowed Professorship, PolyU Postdoctoral Fellowships Scheme and Nazarbayev University Grant Award Number: 090118FD5326.
Publisher Copyright:
© 2018 IEEE.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2018/11/26
Y1 - 2018/11/26
N2 - A novel cryo-controlled nucleation technique is applied to synthesize organometal halide perovskite for solar cells (PSCs). A rapid reduction in the temperature causes a supersaturation condition in the precursor layer, prepared by solution technique, leading to a uniform nucleation sites for the subsequent crystallization phase. The low temperature condition inhibits the pre-mature crystallization of perovskites in the early stage before a uniform seed layer is formed and, thereby, decoupling the nucleation and crystallization phases. This approach allows the formation of a highly uniform nucleation layer and is crucial for the growth of perovskite films with excellent film quality. A power conversion efficiency (PCE) of 21.4 % for the champion PSC was achieved by using this perovskite growth method.
AB - A novel cryo-controlled nucleation technique is applied to synthesize organometal halide perovskite for solar cells (PSCs). A rapid reduction in the temperature causes a supersaturation condition in the precursor layer, prepared by solution technique, leading to a uniform nucleation sites for the subsequent crystallization phase. The low temperature condition inhibits the pre-mature crystallization of perovskites in the early stage before a uniform seed layer is formed and, thereby, decoupling the nucleation and crystallization phases. This approach allows the formation of a highly uniform nucleation layer and is crucial for the growth of perovskite films with excellent film quality. A power conversion efficiency (PCE) of 21.4 % for the champion PSC was achieved by using this perovskite growth method.
KW - crystallization
KW - defects
KW - film quality
KW - nucleation
KW - perovskite solar cells
UR - http://www.scopus.com/inward/record.url?scp=85059880474&partnerID=8YFLogxK
U2 - 10.1109/PVSC.2018.8547268
DO - 10.1109/PVSC.2018.8547268
M3 - Conference article published in proceeding or book
AN - SCOPUS:85059880474
T3 - 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
SP - 503
EP - 507
BT - 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Y2 - 10 June 2018 through 15 June 2018
ER -
