TY - JOUR
T1 - White Light-Emitting Diodes Based on One-Dimensional Organic-Inorganic Hybrid Metal Chloride with Dual Emission
AU - Cheng, Xiaohua
AU - Yue, Sijia
AU - Chen, Runan
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 the Beijing Institute of Technology (BIT). J.Y. acknowledges financial support from the Hong Kong Polytechnic University (grant P0042930).
Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/10/3
Y1 - 2022/10/3
N2 - White-light emissive organic-inorganic hybrid metal halides (MHs) have shown promising potential applications in solid-state lighting. As one-dimensional (1D) MHs for white-light emission remain rare and the key role of halogen regulation in 1D hybrid MHs for broadband emission (BE) has not been well established yet, herein, we report a family of 1D hybrid MHs TMGPbX3 (TMG = 1,1,3,3-tetramethylguanidine, X = Cl-, Br-, or I-) to systematically explore the influence of halogen on crystal structures and photoluminescence (PL) properties in 1D organic-inorganic hybrid MHs. Under ultraviolet excitation, TMGPbBr3 and TMGPbI3 exhibit BE originating from self-trapped excitons (STEs), while TMGPbCl3 manifests the special blue-white dual emission, which is contributed by STEs in inorganic frameworks and free excitons (FEs) in the organic component. Different emission mechanisms of three 1D MHs are well demonstrated and compared. With a PL quantum yield (PLQY) up to 11.67%, a white light-emitting diode (WLED) based on TMGPbCl3 was fabricated to show its valuable application in solid-state lighting.
AB - White-light emissive organic-inorganic hybrid metal halides (MHs) have shown promising potential applications in solid-state lighting. As one-dimensional (1D) MHs for white-light emission remain rare and the key role of halogen regulation in 1D hybrid MHs for broadband emission (BE) has not been well established yet, herein, we report a family of 1D hybrid MHs TMGPbX3 (TMG = 1,1,3,3-tetramethylguanidine, X = Cl-, Br-, or I-) to systematically explore the influence of halogen on crystal structures and photoluminescence (PL) properties in 1D organic-inorganic hybrid MHs. Under ultraviolet excitation, TMGPbBr3 and TMGPbI3 exhibit BE originating from self-trapped excitons (STEs), while TMGPbCl3 manifests the special blue-white dual emission, which is contributed by STEs in inorganic frameworks and free excitons (FEs) in the organic component. Different emission mechanisms of three 1D MHs are well demonstrated and compared. With a PL quantum yield (PLQY) up to 11.67%, a white light-emitting diode (WLED) based on TMGPbCl3 was fabricated to show its valuable application in solid-state lighting.
UR - http://www.scopus.com/inward/record.url?scp=85138791013&partnerID=8YFLogxK
U2 - 10.1021/acs.inorgchem.2c02085
DO - 10.1021/acs.inorgchem.2c02085
M3 - Journal article
AN - SCOPUS:85138791013
SN - 0020-1669
VL - 61
SP - 15475
EP - 15483
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 39
ER -