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
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.