TY - JOUR
T1 - Regulation of Perovskite Nucleation and Orientated Crystal Growth via In Situ Self-Crosslinking Polymer for Bright Perovskite Light-Emitting Diodes
AU - Cheng, Suwen
AU - Zhang, Yupeng
AU - Chu, Ying
AU - Wang, Yanchen
AU - Xie, Yuan
AU - Yu, Chen
AU - Dong, Jingjin
AU - Cao, Jiupeng
AU - Wang, Fangfang
AU - Huang, Wei
AU - Wang, Aifei
AU - Qin, Tianshi
N1 - Publisher Copyright:
© 2025 Wiley-VCH GmbH.
PY - 2025/4/14
Y1 - 2025/4/14
N2 - Hybrid halide perovskite films are becoming increasingly efficient in various applications, but several challenges still remain to be overcome. In this study, thermally polymerized additive N-vinyl-2-pyrrolidone (NVP) is utilized to tune the crystallization and orientation of mixed organo-metal perovskite films. Using in situ spectroscopy, it is demonstrated that NVP plays a crucial role in prolonging the crystallization process and separating the nucleation and crystal growth by forming an NVP-precursor intermediate phase. Additionally, the intermediate adduct effectively passivates defects, reduces nonradiative recombination, improves crystallinity, and enhances the transmission of charge carriers. NVP-containing perovskite light-emitting diodes (PeLEDs) are subsequently developed that exhibit stable and bright green luminance exceeding 240 000 cd m−2. These findings provide valuable insights into manipulating the crystallization behavior of mixed organo-metal perovskite films.
AB - Hybrid halide perovskite films are becoming increasingly efficient in various applications, but several challenges still remain to be overcome. In this study, thermally polymerized additive N-vinyl-2-pyrrolidone (NVP) is utilized to tune the crystallization and orientation of mixed organo-metal perovskite films. Using in situ spectroscopy, it is demonstrated that NVP plays a crucial role in prolonging the crystallization process and separating the nucleation and crystal growth by forming an NVP-precursor intermediate phase. Additionally, the intermediate adduct effectively passivates defects, reduces nonradiative recombination, improves crystallinity, and enhances the transmission of charge carriers. NVP-containing perovskite light-emitting diodes (PeLEDs) are subsequently developed that exhibit stable and bright green luminance exceeding 240 000 cd m−2. These findings provide valuable insights into manipulating the crystallization behavior of mixed organo-metal perovskite films.
KW - hybrid halide perovskite films
KW - light-emitting diodes
KW - perovskite nucleation regulation
KW - perovskite orientation regulation
KW - self-crosslinking polymer
UR - http://www.scopus.com/inward/record.url?scp=105002568855&partnerID=8YFLogxK
U2 - 10.1002/adom.202403012
DO - 10.1002/adom.202403012
M3 - 文章
AN - SCOPUS:85216333433
SN - 2195-1071
VL - 13
JO - Advanced Optical Materials
JF - Advanced Optical Materials
IS - 11
M1 - 2403012
ER -