Welcome to The Shao Group

Our current research focus on the design and fabrication of perovskite solar cells, near infrared photodetectors and X-ray detectors.

The final mission of our group is to design and develop new type photoelectronic devices with low cost and superior performance to serve our country and society. Achieving the ‘Holy Grail” requires the synthesis of novel material, deep understanding of the material photoelectronic properties, smart design of device structure, careful optimization of recipe. Therefore, we proactively collaborated with experts from different fields including chemistry, physics and engineering.


Publications

1. Electron-hole diffusion lengths > 175 μm in solution-grown CH3NH3PbI3 single crystals, Science 347 , 967-970, 2015.

2. Origin and elimination of photocurrent hysteresis by fullerene passivation in CH3NH3PbI3 planar heterojunction solar cells, Nature communications 5, 5784, 2014.

Flexible Solar Cells
2D Perovskite Solar Cells
Perovskite X-ray detector
Flexible solar cells show promising applications in wearable energy, building integrated photovoltaic due to their cheap, light, flexible and translucent characteristics.
Nowadays, the certification efficiency of three-dimensional organic-inorganic hybrid perovskite solar cells has reached 22%, exceeding polycrystalline silicon solar cells. However, the instability of three-dimensional perovskite under humidity, high temperature and high light intensity hinders industrialization and practical application. To solve the stability problem, researchers introduced two-dimensional perovskite materials.
Due to the presence of high atomic number elements such as lead, iodine, and bromine in perovskite material, perovskite material has a strong absorption of high-energy photons and X-rays. At present, the sensitivity of three-dimensional perovskite-based X-ray detectors has reached 80 μC Gyair1 cm-2, which is several times more than that of the commercial polycrystalline selenium X-ray detectors.