Citation: Xinbao Tong, Jiaying Liu, Yanqi Zhao, Jingjun Li, Ye Tian, Qingyi Liu, Shuiying Gao, Rong Cao. Metal-organic framework supported carbon quantum dots as white light-emitting phosphor[J]. Chinese Chemical Letters, ;2025, 36(7): 111058. doi: 10.1016/j.cclet.2025.111058 shu

Metal-organic framework supported carbon quantum dots as white light-emitting phosphor

Xinbao Tong ^{a, b, 1} ,
Jiaying Liu ^{a, b, 1} ,
Yanqi Zhao ^{a, b} ,
Jingjun Li ^{b, c, d} ,
Ye Tian ^{b, c} ,
Qingyi Liu ^{a, b} ,
Shuiying Gao ^{a, b, c, *,} ,
Rong Cao ^{a, b, c, d, *,}

a.
College of Chemistry, Fuzhou University, Fuzhou 350108, China
b.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
c.
University of Chinese Academy of Sciences, Beijing 100049, China
d.
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China

gaosy@fjirsm.ac.cn

rcao@fjirsm.ac.cn

Received Date: 5 December 2024
Revised Date: 4 March 2025
Accepted Date: 7 March 2025
Available Online: 8 March 2025

Figures(6)

The growing environmental concerns regarding rare earth elements in fluorescent powders, along with high production costs, have increased the demand for sustainable alternatives. We propose a promising solution using luminescent metal-organic frameworks (LMOFs) with large surface areas and tunable pore structures, combined with organic carbon quantum dots (CQDs). This study develops a novel white light-emitting diode (WLED) fluorescent powder by incorporating yellow-fluorescent quantum dots (CQDs-Y) into blue-emitting LMOF (ZJU-28), forming the composite material CQDs-Y-n@ZJU-28. The composite exhibits excellent thermal and chemical stability, long-term storage performance, and emits warm white light (CIE: 0.3277, 0.3281) when subjected to excitation at 365 nm, along with an external quantum efficiency (EQE) of 8.85%. Furthermore, it exhibits tunable emission characteristics and promising LED performance, showcasing a color rendering index (CRI) of 78 and a correlated color temperature of 3384 K. The emitted light undergoes minimal deviation in color towards the white end of the spectrum in the temperature range of 277–437 K, making it an ideal candidate for advanced WLED applications.
- White light-emitting diode,
- Luminescent materials,
- Metal organic frameworks,
- Carbon quantum dots,
- CIE,
- Fluorescence resonance energy transfer
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