Research

Halide Perovskite

The favorable electronic band structure of the perovskite exhibits a direct p-p transition bandgap, which is responsible for the strong optical absorption, one order of magnitude higher absorption coefficients than GaAs, and small effective masses for both carriers. The photo-generated exciton can be readily dissociated into free charges owing to its low binding energy, where the free carriers independently travel due to their ambipolar charge-transfer property. Notably, the perovskite shows long balanced carrier diffusion length and long carrier life time, which is rarely expected from a solution processed-material, inevitably accompanied by high density of defects. The outstanding carrier property in the perovskite is also accounted for by the large polaron formation and high defect tolerance with shallow trap density.

Perovskite solar cells (PSCs)

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Perovskite solar cells (PSCs) have explosively expanded since its first emergence in 2012. Remarkably, the power conversion efficiency (PCE) of PSCs was rapidly raised to 25.5% as a certified efficiency in 2020. In terms of PCE, the PSCs not only surpassed other emerging photovoltaics, such as dye-sensitized solar cells, organic cells, inorganic cells and quantum dot cells, even before PSC being matured, but also become more competitive in thin-film technologies including CIGS, CdTe and amorphous Si solar cells, which makes PSCs successfully settle into one of the most promising photovoltaics technologies.

Light emitting diode Memristor Seneor

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A variety of applications based on nanomaterials

Self-powered wearable electronics

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Flexible and stretchable electronics to satisfy the demanding needs of future electronics