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有机-无机杂化钙钛矿材料是可通过溶液工艺低温制备得到的直接带隙半导体晶体薄膜.在众多可溶液加工的半导体材料中,有机-无机杂化钙钛矿薄膜是为数不多的低缺陷密度、双极子传输性能优异的晶体薄膜,同时兼具宽光谱吸收和长载流子扩散距离等特性,是平面异质结太阳能电池的理想选择.另外,作为低缺陷密度的直接带隙半导体晶体材料,杂化钙钛矿薄膜具有优异的发光特性.其发光波长可通过能带工程(在分子水平上改变其组分)进行调节,因此有望在发光二极管和激光等光电器件中得到新应用.总结了钙钛矿材料的优异特性和目前应用研究的进展,并对其未来发展做了展望.
Organic-inorganic hybrid perovskite materials are direct band gap semiconductor crystal films that can be prepared at low temperatures by solution processes Among the many solution-processable semiconducting materials organic-inorganic hybrid perovskite films are among the few low Defect density, excellent bipolar transmission properties of the crystal film, while combining wide spectral absorption and long carrier diffusion distance and other characteristics, is ideal for planar heterojunction solar cells. In addition, as a low defect density of the direct band gap Semiconductor crystal materials and hybrid perovskite films have excellent luminescence properties and their emission wavelength can be adjusted by band-engineering (changing their composition at the molecular level), so that it is expected to find new applications in optoelectronic devices such as light-emitting diodes and lasers Application The advantages and disadvantages of perovskite materials and their applications are summarized, and the future development of them is prospected.