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A research project jointly\nconducted by the University of Macau (UM), Nanjing Tech University, and Nanyang\nTechnological University, Singapore, has achieved a significant breakthrough,\nlaying a theoretical foundation for materialising high-efficiency and low-cost\nperovskite light emitting diode (LED). The related finding has been\npublished in Nature Communications<\/i>.\nThe research can help to significantly improve the luminous efficiency of\nperovskite LED and have the potential to bring low-cost, high-efficiency LED\ndisplays and LED light sources into daily life.<\/p>
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Researchers from the three\nuniversities discovered that the slow bimolecular recombination that drives\nthree-dimensional lead-halide perovskites\u2019 outstanding photovoltaic performance\nis conversely a fundamental limitation for electroluminescence. By probing the\nmicroscopic carrier dynamics with femtosecond laser spectroscopies, the slow\nbimolecular recombination limitation can be overcome by tailoring the\nthree-dimensional perovskites into van-der-Waals-coupled Ruddlesden-Popper\nperovskite multi-quantum-wells. High-efficiency electroluminescence can be\nachieved with this new type of perovskites. The research project was jointly\nled by Dr\nXing Guichuan, assistant professor from UM\u2019s Institute of Applied\nPhysics and Materials Engineering; Prof Huang Wei, president of Nanjing Tech\nUniversity; and Prof Sum Tze Chien from Nanyang Technological University.<\/p>
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According to Dr Xing,\nthe newest technology available on the market is organic light emitting diode\n(OLED). Because of the low-temperature solution processability, large range\nemission colour tenability, and low cost, the perovskites are promising\nalternatives to the organic molecules for LED applications. UM\u2019s research can\nhelp to significantly improve the luminous efficiency of perovskite LED and\npromote the development and commercialisation of this technology.<\/p>
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Dr Xing is one of the initiators of the research\nin the application of this new type of perovskites. In 2014, the paper\nfirst-authored by him, titled, \u2018Low-temperature Solution-processed\nWavelength-tunable Perovskites for Lasing\u2019, was published in Nature Materials<\/i>. It has been cited more\nthan 600 times. Another paper first-authored by him, titled \u2018Long-range\nBalanced Electron-and Hole-transport Lengths in Organic-inorganic CH3NH3PbI3\u2019,\nwas published in Science <\/i>magazine in\n2013, and has been cited over 1,800 times. In 2016, he received the PVSEC-26\nYoung Scientist Award, in recognition of his outstanding contributions to the\nresearch in perovskite optoelectronics.<\/p> <\/p> <\/p> <\/p> <\/p> <\/p> <\/p> Media Contact Information: <\/p> <\/p> <\/p> <\/p> <\/p> <\/p> <\/p> Albee Lei Tel\uff1a(853) 88228004 <\/p> <\/p>","protected":false},"excerpt":{"rendered":" A research project jointly conducted by the University of Macau (UM), Nanjing Tech University, and Nanyang Technological University, Singapore, has achieved a significant breakthrough, laying a theoretical foundation for materialising…<\/p>\n","protected":false},"author":1,"featured_media":126976,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[60],"tags":[],"class_list":["post-194216","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-press-release"],"acf":[],"yoast_head":"\n
Communications Office, University of Macau<\/p>
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Email\uff1aprs.media@um.edu.mo
UM Website\uff1awww.umac.mo<\/p><\/div>