A5054858332- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Solid-state spectroscopy and crystallography
- Biomimetic flight and propulsion mechanisms
- Microfluidic and Bio-sensing Technologies
- Copper-based nanomaterials and applications
- Micro and Nano Robotics
Guizhou Institute of Technology
2019
Shijiazhuang Tiedao University
2017-2018
Organic-inorganic hybrid perovskites are promising candidates for the next-generation solar cells. Many efforts have been made to study their structures in search a better mechanistic understanding guide materials optimization. Here, we investigate structure instability of single-crystalline CH3NH3PbI3 (MAPbI3) film by using transmission electron microscopy. We find that MAPbI3 is very sensitive beam illumination and rapidly decomposes into hexagonal PbI2. propose decomposition pathway,...
Abstract Photovoltaic conversion efficiency (PCE) of halide perovskite solar cells has risen spectacularly, yet the very crystalline structure CH 3 NH PbI remains ambiguous after extensive researches, and its polar nature hotly debated. Here we present compelling evidences that crystals self-grown on FTO/TiO 2 substrate consist ferroic domains with alternating nonpolar orders, in contrast to previous experimental theoretical expectations, possess reduced photocurrent. It is found orders can...
Photovoltaic conversion efficiency (PCE) of halide perovskite solar cells has risen spectacularly, yet the very crystalline structure CH3NH3PbI3 remains ambiguous after extensive researches, and its polar nature hotly debated. Here we present compelling evidences that crystals self-grown on FTO/TiO2 substrate consist ferroic domains with alternating nonpolar orders, in contrast to previous experimental theoretical expectations, possess reduced photocurrent. It is found orders can be...
It is essential for flapping-wing micro aerial vehicles to have a driver with compact size, low mass, and high conversion efficiency in low-power application. In this article, dual-stage converter driving piezoelectric actuator was designed implemented, which can be applied vehicles. Using the “simultaneous drive” method, an Residual Current Devices (RCD) passive snubber flyback DC/DC step-up cascaded bidirectional active half-bridge drive stage designed. The controlled by pulse width...