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Updated: Jan 9, 2026

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes
07:44

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes

Published on: November 16, 2018

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基于螺旋发光剂的高效非化近紫外有机发光二极管,具有高的反向交叉系统交叉

Jiajie Zeng1, Guoxia Hao1, Xing Wu1

  • 1State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China. mszjzhao@scut.edu.cn.

Materials horizons
|December 8, 2025
PubMed
概括

研究人员使用基于螺旋的发光剂开发了新的近紫外线有机发光二极管 (OLED). 这些高效率的设备实现了卓越的电光发光性能,为先进的NUV应用铺平了道路.

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The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
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Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
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