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Ya-Kun Wang
Researcher at University of Toronto
Publications - 42
Citations - 3553
Ya-Kun Wang is an academic researcher from University of Toronto. The author has contributed to research in topics: Perovskite (structure) & Quantum efficiency. The author has an hindex of 20, co-authored 42 publications receiving 1930 citations. Previous affiliations of Ya-Kun Wang include Soochow University (Suzhou).
Papers
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Journal ArticleDOI
Bipolar-shell resurfacing for blue LEDs based on strongly confined perovskite quantum dots
Yitong Dong,Ya-Kun Wang,Ya-Kun Wang,Fanglong Yuan,Andrew Johnston,Yuan Liu,Dongxin Ma,Min-Jae Choi,Bin Chen,Mahshid Chekini,Se-Woong Baek,Se-Woong Baek,Laxmi Kishore Sagar,James Z. Fan,Yi Hou,Mingjian Wu,Seungjin Lee,Bin Sun,Sjoerd Hoogland,Rafael Quintero-Bermudez,Hinako Ebe,Petar Todorović,Filip Dinic,Peicheng Li,Hao Ting Kung,Makhsud I. Saidaminov,Makhsud I. Saidaminov,Eugenia Kumacheva,Erdmann Spiecker,Liang-Sheng Liao,Oleksandr Voznyy,Zheng-Hong Lu,Edward H. Sargent +32 more
TL;DR: Perovskite QD resurfacing is reported to achieve a bipolar shell consisting of an inner anion shell, and an outer shell comprised of cations and polar solvent molecules, to fabricate blue and green light-emitting diodes with improved mobility.
Journal ArticleDOI
Thermal unequilibrium of strained black CsPbI3 thin films
Julian A. Steele,Handong Jin,Iurii Dovgaliuk,Robert F. Berger,Tom Braeckevelt,Haifeng Yuan,Haifeng Yuan,Cristina Martin,Cristina Martin,Eduardo Solano,Kurt Lejaeghere,Sven Rogge,Charlotte Notebaert,Wouter Vandezande,Kris P. F. Janssen,Bart Goderis,Elke Debroye,Ya-Kun Wang,Yitong Dong,Dongxin Ma,Makhsud I. Saidaminov,Hairen Tan,Hairen Tan,Zheng-Hong Lu,Vadim Dyadkin,Dmitry Chernyshov,Veronique Van Speybroeck,Edward H. Sargent,Johan Hofkens,Maarten B. J. Roeffaers +29 more
TL;DR: The use of substrate clamping and biaxial strain is reported to render black-phase CsPbI3 thin films stable at room temperature, a response verified by ab initio thermodynamic modeling.
Journal ArticleDOI
Bright high-colour-purity deep-blue carbon dot light-emitting diodes via efficient edge amination
Fanglong Yuan,Ya-Kun Wang,Geetu Sharma,Yitong Dong,Xiaopeng Zheng,Peicheng Li,Andrew Johnston,Golam Bappi,James Z. Fan,Hao Kung,Bin Chen,Makhsud I. Saidaminov,Makhsud I. Saidaminov,Kamalpreet Singh,Oleksandr Voznyy,Osman M. Bakr,Zheng-Hong Lu,Edward H. Sargent +17 more
TL;DR: In this article, deep-blue high-colour-purity light-emitting materials are developed by using amine-based edge passivation, and they exhibit a maximum luminance of 5,240 cd m−2 and an external quantum efficiency of 4%.
Journal ArticleDOI
Dopant‐Free Spiro‐Triphenylamine/Fluorene as Hole‐Transporting Material for Perovskite Solar Cells with Enhanced Efficiency and Stability
Ya-Kun Wang,Zhongcheng Yuan,Guozheng Shi,Yongxi Li,Qian Li,Fei Hui,Baoquan Sun,Zuo-Quan Jiang,Liang-Sheng Liao +8 more
TL;DR: In this paper, two star hole-transporting material (HTM) for perovskite solar cells, namely 2,2,7,7′-tetrakis(N,N-di-p-methoxyphenyl-amine) 9,9′-spirobifluorene (Spiro-OMeTAD) and poly(triarylamine) are subjeted to chemical combination to yield dopant-free N2,N2, N2,N2′,N 2,N 2
Journal ArticleDOI
Over 10% EQE Near-Infrared Electroluminescence Based on a Thermally Activated Delayed Fluorescence Emitter
Yi Yuan,Yun Hu,Ye-Xin Zhang,Jiu-Dong Lin,Ya-Kun Wang,Zuo-Quan Jiang,Liang-Sheng Liao,Shuit-Tong Lee +7 more
TL;DR: In this article, a wedge-shaped Dπ-A-π-D emitter with thermally activated delayed fluorescence property and a small single-triplet splitting (ΔEst) of 0.14 eV is presented.