TY - JOUR
T1 - Achieving Ultrahigh Photoluminescence Quantum Yield in Highly Stable Cs3Cu2I5 Perovskite Single Crystals Through Melt Growth
AU - Nan, Weina
AU - Zhang, Liang
AU - Li, Sijia
AU - Jin, Peng
AU - Zhou, Boru
AU - Yin, Ziang
AU - Wang, Tao
AU - Ye, Ning
AU - Hu, Zhanggui
AU - Wu, Yicheng
N1 - Publisher Copyright:
© 2024 American Chemical Society.
PY - 2024/12/16
Y1 - 2024/12/16
N2 - Low-dimensional halide perovskites Cs3Cu2I5 have garnered increasing attention for their exceptional luminescent properties, attributed to their stability, high photoluminescence quantum yield (PLQY), and scintillation efficiency. Here, we report the growth of transparent Cs3Cu2I5 crystals via the Bridgman method, emphasizing precise control of melt stoichiometry for optimal performance. Through melt composition optimization, significant improvements in crystal clarity and structural integrity were achieved, enhancing transmittance from 30% to over 80% and achieving nearly 100% PLQY. Notably, it exhibited self-absorption-free behavior due to a large Stokes shift of 1.15 eV, indicative of a substantial exciton binding energy (383 meV) associated with exciton self-trapping. Lastly, under 241Am γ-ray irradiation at 59.5 keV, the energy resolution improved to 14.9% with the transparent Cs3Cu2I5 crystals, demonstrating its potential for high-performance scintillation applications.
AB - Low-dimensional halide perovskites Cs3Cu2I5 have garnered increasing attention for their exceptional luminescent properties, attributed to their stability, high photoluminescence quantum yield (PLQY), and scintillation efficiency. Here, we report the growth of transparent Cs3Cu2I5 crystals via the Bridgman method, emphasizing precise control of melt stoichiometry for optimal performance. Through melt composition optimization, significant improvements in crystal clarity and structural integrity were achieved, enhancing transmittance from 30% to over 80% and achieving nearly 100% PLQY. Notably, it exhibited self-absorption-free behavior due to a large Stokes shift of 1.15 eV, indicative of a substantial exciton binding energy (383 meV) associated with exciton self-trapping. Lastly, under 241Am γ-ray irradiation at 59.5 keV, the energy resolution improved to 14.9% with the transparent Cs3Cu2I5 crystals, demonstrating its potential for high-performance scintillation applications.
UR - http://www.scopus.com/inward/record.url?scp=85210410860&partnerID=8YFLogxK
U2 - 10.1021/acs.inorgchem.4c03588
DO - 10.1021/acs.inorgchem.4c03588
M3 - 文章
C2 - 39602176
AN - SCOPUS:85210410860
SN - 0020-1669
VL - 63
SP - 23691
EP - 23697
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 50
ER -