Our group is focused on developing solution processed electronic devices and advanced characterization technique on the electronic processes in organic and nano materials.
Selected Publications
Organic Electronics: charge transfer and charge transport
1. Zhang H, Yuan J, Wang T, Nai Y, Tokmoldin N, Liu W, Ouyang S, Jasiūnas R, Liu Y, Li Y, Shadabroo MS. Overcoming the fill-factor limit of organic solar cells. Nature Photonics. 2026 Jun 19:1-8.
2. Li Q, Kong L, Mei L, Ouyang S, Ji Y, Fan B, Gao H, Gao W, Qi F, Guan Z, Zhang N. Recycling of spin-triplet excitons in organic photovoltaics. Nature. 2026 Apr 30;652(8112):1204-10.
3. Mahadevan S, Liu T, Pratik SM, Li Y, Ho HY, Ouyang S, Lu X, Yip HL, Chow PC, Brédas JL, Coropceanu V. Assessing intra-and inter-molecular charge transfer excitations in non-fullerene acceptors using electroabsorption spectroscopy. Nature Communications. 2024 Mar 16;15(1):2393.
4. Liu T, Foo Y, Zapien JA, Li M, Tsang SW. A generalized Stark effect electromodulation model for extracting excitonic properties in organic semiconductors. Nature Communications. 2019 Nov 8;10(1):5089.
5. Ma Y, Choi TW, Cheung SH, Cheng Y, Xu X, Xie YM, Li HW, Li M, Luo H, Zhang W, So SK. Charge transfer-induced photoluminescence in ZnO nanoparticles. Nanoscale. 2019 May 9;11(18):8736-43.
6. Li HW, Guan Z, Cheng Y, Lui T, Yang Q, Lee CS, Chen S, Tsang SW. On the study of exciton binding energy with direct charge generation in photovoltaic polymers. Advanced Electronic Materials. 2016 Nov;2(11):1600200.
7. Guan Z, Li HW, Zhang J, Cheng Y, Yang Q, Lo MF, Ng TW, Tsang SW, Lee CS. Evidence of delocalization in charge-transfer state manifold for donor: acceptor organic photovoltaics. ACS applied materials & interfaces. 2016 Aug 24;8(33):21798-805.
8. Guan Z, Li HW, Cheng Y, Yang Q, Lo MF, Ng TW, Tsang SW, Lee CS. Charge-transfer state energy and its relationship with open-circuit voltage in an organic photovoltaic device. The Journal of Physical Chemistry C. 2016 Jul 7;120(26):14059-68.
9. Tsang SW, Denhoff MW, Tao Y, Lu ZH. Charge-carrier induced barrier-height reduction at organic heterojunction. Physical Review B—Condensed Matter and Materials Physics. 2008 Aug 15;78(8):081301.
10. Tsang SW, So SK, Xu JB. Application of admittance spectroscopy to evaluate carrier mobility in organic charge transport materials. Journal of applied physics. 2006 Jan 1;99(1).
Perovskite: In-situ probing of crystallization and degradation
