Vinod K. Sangwan

Jul 31, 2024 | science.org | Kai Wang |Wenjia Li |Rajkumar Vasudeva Raju |Vinod K. Sangwan

AbstractThe growth of layered 2D compounds is a key ingredient in finding new phenomena in quantum materials, optoelectronics, and energy conversion. Here, we report SnP2Se6, a van der Waals chiral (R3 space group) semiconductor with an indirect bandgap of 1.36 to 1.41 electron volts. Exfoliated SnP2Se6 flakes are integrated into high-performance field-effect transistors with electron mobilities >100 cm2/Vs and on/off ratios >106 at room temperature.

Jul 9, 2024 | pubs.rsc.org | Vinod K. Sangwan |Zachary Martin |Guoping Li |Fei Qin

Elucidating Performance Degradation Mechanisms in Non-Fullerene Acceptor Solar Cells Organic solar cells (OSCs) using non-fullerene acceptors (NFAs) afford exceptional photovoltaic performance metrics, however, their stability remains a significant challenge. Existing OSC stability studies focus on understanding degradation rate-performance relationships, improving interfacial layers, and suppressing degradative chemical reaction pathways.