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您的检索式：作者名="Yunjun Cao"
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| 1 | Highly efficient green InP-based quantum dot light-emitting diodes regulated by inner alloyed shell component显示文摘InP-based quantum dot light-emitting diodes(QLEDs),as less toxic than Cd-free and Pb-free optoelectronic devices,have become the most promising benign alternatives for the next generation lighting and display.However,the development of green-emitting InP-based QLEDs still remains a great challenge to the environmental preparation of InP quantum dots(QDs)and superior device performance.Herein,we reported the highly efficient green-emitting InP-based QLEDs regulated by the inner alloyed shell components.Based on the environmental phosphorus tris(dimethylamino)phosphine((DMA)3P),we obtained highly efficient InP-based QDs with the narrowest full width at half maximum(~35 nm)and highest quantum yield(~97%)by inserting the gradient inner shell layer ZnSe_(x)S_(1-x)without further post-treatment.More importantly,we concretely discussed the effect and physical mechanism of ZnSe_(x)S_(1-x)layer on the performance of QDs and QLEDs through the characterization of structure,luminescence,femtosecond transient absorption,and ultraviolet photoelectron spectroscopy.We demonstrated that the insert inner alloyed shell ZnSe_(x)S_(1-x)provided bifunctionality,which diminished the interface defects upon balancing the lattice mismatch and tailored the energy levels of InP-based QDs which could promote the balanced carrier injection.The resulting QLEDs applying the InP/ZnSe_(0.7)S_(0.3)/ZnS QDs as an emitter layer exhibited a maximum external quantum efficiency of 15.2%with the electroluminescence peak of 532 nm,which was almost the highest record of InP-based pure green-emitting QLEDs.These results demonstrated the applicability and processability of inner shell component engineering in the preparation of high-quallity InP-based QLEDs. | Peng Yu Sheng Cao Yuliang Shan Yuhe Bi Yaqi Hu Ruosheng Zeng Bingsuo Zou Yunjun Wang Jialong Zhao | 2022 | Light(Science & Applications)2022，11，7： | 1 |
| 2 | Annealing effect on optical and electronic properties of silicon rich amorphous silicon-carbide films显示文摘一系列 Si 富有的非结晶的硅碳化物(一 -- 原文如此: H ) 薄电影在常规血浆被扔有各种各样的煤气的比率 R = 的提高的化学蒸汽免职系统[CH4 ]/[SiH4 ] 。微结构,同样扔的电影的光、电子的性质在这研究被调查。光乐队差距与在这些电影的碳内容线性地成正比,它能被改变煤气的比率在 1.82.4 eV 的一个范围控制,这被发现, R。在房间温度的黑暗和相片传导性与在与 1.96 eV 的光乐队差距为这部电影象 104 一样高到达的电影,和光敏度增加碳内容被减少。同样扔的样品随后在 900 楴敶戠慲据 ? 眠 ? 牰獥湥整 ? 桴 ? 汣獯摥昭牯 ? 硥牰獥楳湯 ? 潦 ? 灯楴慭? 牴湡浳瑩楴杮瀠睯牥 ? 的温度被退火偔 ? 諗珨?? 咑 ????? 鮬岑 ? esults 焸 ? 焸吗?? | Shuxin LI Yunjun RUI Yunqing CAO Jun XU Kunji CHEN | 2012 | Frontiers of Optoelectronics2012，5，1： | 1 |
| 3 | Dynamic chemical processes on ZnO surfaces tuned by physisorption under ambient conditions显示文摘The catalytic properties of non-reducible metal oxides have intrigued continuous interest in the past decades.Often time,catalytic studies of bulk non-reducible oxides focused on their high-temperature applications owing to their weak interaction with small molecules.Hereby,combining ambient-pressure scanning tunneling microscopy(AP-STM),AP X-ray photoelectron spectroscopy(AP-XPS)and density functional theory(DFT)calculations,we studied the activation of CO and CO_(2)on ZnO,a typical nonreducible oxide and major catalytic material in the conversion of C1 molecules.By visualizing the chemical processes on ZnO surfaces at the atomic scale under AP conditions,we showed that new adsorbate structures induced by the enhanced physisorption and the concerted interaction of physisorbed molecules could facilitate the activation of CO and CO_(2)on ZnO.The reactivity of ZnO towards CO could be observed under AP conditions,where an ordered(2×1)–CO structure was observed on ZnO(1010).Meanwhile,chemisorption of CO_(2)on ZnO(1010)under AP conditions was also enhanced by physisorbed CO_(2),which minimizes the repulsion between surface dipoles and causes a(3×1)–CO_(2)structure.Our study has brought molecular insight into the fundamental chemistry and catalytic properties of ZnO surfaces under realistic reaction conditions. | Yunjian Ling Jie Luo Yihua Ran Yunjun Cao Wugen Huang Jun Cai Zhi Liu Wei-Xue Li Fan Yang Xinhe Bao | 2022 | Journal of Energy Chemistry2022，31，9： | 0 |
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