Light Emitting Diodes
Light emitting diodes (LEDs) compose thin films of molecules that generate light upon the application of electricity. These devices are more energy efficient and can be mechanically-flexible. Fascinating LED products include LED TVs and flexible displays. We are fabricating LED devices based on various light-emitting polymers and organic-inorganic perovskite materials, using different thin film deposition methods.
Green perovskite (left), green polymer (second left) and white polymer (right) light emitting diodes
Ref:
1. Fanghao Ye, Huijun Zhang, Pang Wang, Jinlong Cai, Liang Wang, Dan Liu, Tao Wang*. Spectral tuning of efficient CsPbBrxCl3-x blue light-emitting diodes via halogen exchange triggered by nenzenesulfonates. Chemistry of Materials, 2020, 32, 3211-3218.
2. Fanghao Ye, Huijun Zhang, Wei Li, Yu Yan, Jinlong Cai, Robert S. Gurney, Andrew J. Pearson, Dan Liu, Tao Wang*. Ligand-exchange of low-temperature synthesized CsPbBr3 perovskite towards high efficiency light-emitting diodes. Small Methods, 2019, 3, 1800489.
3. Huijun Zhang, Fanghao Ye, Wei Li, Robert S. Gurney, Dan Liu, Chuanxi Xiong*, Tao Wang*. Improved performance of perovskite light-emitting diodes by dual passivtion with an ionic additive. ACS Applied Energy Materials, 2019, 2, 3336-3342.
4. Huijun Zhang, Fanghao Ye, Wei Li, Jiaxu Yao, Robert S. Gurney, Dan Liu, Chuanxi Xiong, Tao Wang*. Bright perovskite light-emitting diodes with improved film morphology and reduced trap density via surface passivation using quaternary ammonium salts. Organic Electronics, 2019, 67, 187-193.
5. Jinghai Li, Feilong Cai, Liyan Yang, Fanghao Ye, Jinghui Zhang, Robert S. Gurney, Dan Liu, Tao Wang. Applied Physics Letters, 2017, 111, 053301.
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