Chinese Journal of Liquid Crystals and Displays, Volume. 36, Issue 1, 203(2021)
Cadmium-free and lead-free environment-friendly blue quantum dots and light-emitting diodes
Quantum dots and their light-emitting diodes have a great potential in the display industry. However, cadmium-based quantum dots and perovskite nanocrystals, which contain cadmium and lead, posing a great threat to the environment and human health, which limits their large-scale application. Cadmium-free and lead-free quantum dots and their light-emitting diodes show greater potential. At present, there are many researches on red and green emitting, but few reports on blue light emitting. The research progress of several cadmium-free and lead-free environment-friendly blue quantum dots and light-emitting diodes are summarized in this paper, such as indium phosphide (InP), zinc selenide (ZnSe) and copper halide-based perovskite (Cs3Cu2I5). The structure design, fabrication process of materials and the structure optimization and performance characterization of devices are summarized and analyzed. The future development of cadmium-free and lead-free environment-friendly blue quantum dots and their light-emitting diodes are prospected. The further exploration and development directions are proposed from two aspects of materials and devices.
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ZHAO Fang-qing, HAO Jian-hua, WANG Kai. Cadmium-free and lead-free environment-friendly blue quantum dots and light-emitting diodes[J]. Chinese Journal of Liquid Crystals and Displays, 2021, 36(1): 203
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Received: Oct. 11, 2020
Accepted: --
Published Online: Aug. 22, 2021
The Author Email: ZHAO Fang-qing (11968010@mail.sustech.edu.cn)