TY - JOUR
T1 - Two Novel Two-Dimensional Organic-Inorganic Hybrid Lead Halides with Broadband Emission for White-Light-Emitting Diodes
AU - Cheng, Xiaohua
AU - Han, Ying
AU - Cheng, Teng
AU - Xie, Yipeng
AU - Chang, Xuerui
AU - Lin, Yufan
AU - Lv, Longyun
AU - Li, Juan
AU - Yin, Jun
AU - Cui, Bin Bin
N1 - Funding Information:
This work was supported by funding from the National Natural Science Foundation (21703008 and 22075022) and the “Cultivate Creative Talents Project” of Beijing Institute of Technology (BIT). J.Y. acknowledges financial support from the Hong Kong Polytechnic University (grant P0042930).
Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/6
Y1 - 2023/6
N2 - Low-dimensional organic-inorganic metal halides (LOMHs) recently have attracted much attention due to their tunable crystal structures and excellent photoelectric properties. The configuration and arrangement of organic cations in LOMHs have significant effect on the structure of inorganic frameworks and luminescence properties. In this work, we systematically explored the "spatial effect" and "hydrogen bonding effect" of organic cations on the structure and properties of LOMHs, by synthesizing three LOMHs including (N-AD)PbCl4, (N-AD)2Pb2Br7, and (N-AD)4Pb3I12 (N-AD: N-acetylethylenediamine, C4H10N2O). Specifically, (110)-oriented two-dimensional (N-AD)PbCl4 and (N-AD)2Pb2Br7 with manifest blue-white emissions, originating from the free excitons (FEs) and self-trapped excitons (STEs), respectively. The UV-pumped light-emitting diode (LED)-based on (N-AD)2Pb2Br7 was prepared, and the highest color rendering index (CRI) and correlated color temperature (CCT) were up to 80 and 4484 K, respectively. This proves its potential application in solid-state lighting.
AB - Low-dimensional organic-inorganic metal halides (LOMHs) recently have attracted much attention due to their tunable crystal structures and excellent photoelectric properties. The configuration and arrangement of organic cations in LOMHs have significant effect on the structure of inorganic frameworks and luminescence properties. In this work, we systematically explored the "spatial effect" and "hydrogen bonding effect" of organic cations on the structure and properties of LOMHs, by synthesizing three LOMHs including (N-AD)PbCl4, (N-AD)2Pb2Br7, and (N-AD)4Pb3I12 (N-AD: N-acetylethylenediamine, C4H10N2O). Specifically, (110)-oriented two-dimensional (N-AD)PbCl4 and (N-AD)2Pb2Br7 with manifest blue-white emissions, originating from the free excitons (FEs) and self-trapped excitons (STEs), respectively. The UV-pumped light-emitting diode (LED)-based on (N-AD)2Pb2Br7 was prepared, and the highest color rendering index (CRI) and correlated color temperature (CCT) were up to 80 and 4484 K, respectively. This proves its potential application in solid-state lighting.
KW - hydrogen bonding
KW - ow-dimensional
KW - photoluminescence
KW - structure regulation
KW - two-dimensional metal halides
KW - white-light-emitting diodes
UR - http://www.scopus.com/inward/record.url?scp=85164625151&partnerID=8YFLogxK
U2 - 10.1021/acsami.3c07345
DO - 10.1021/acsami.3c07345
M3 - Journal article
C2 - 37382556
AN - SCOPUS:85164625151
SN - 1944-8244
VL - 15
SP - 32506
EP - 32514
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 27
ER -