英文摘要翻译

The lead (PbI2 iodine) material is an n-type semiconductor materials, the probe into energy high resolution, linear response, pulse rise time is short, simple structure, high efficiency and low detection, convenient operation, in nuclear physics experiment and research aspects are widely used in nuclear science and technology, and many of the application of gas detector and instead of the counter. With its high conductivity, high visible light transmittance and infrared reflectance and its good performance, PbI2 film photoelectric will get more extensive application.

In this paper PbI2 crystal structure, properties, applications and JT - 500 beam evaporation system basis, summarizes the electron beam evaporation PbI2 preparation principle and method of the film. And the electron beam evaporation process, setting and process parameters, PbI2 preparation in glass substrate, a detailed study of the film samples analyzed under different temperatures of preparation PbI2 film crystal structure, uv-vis spectra (UV) light through the luminescence (PL) spectrum property.

X-ray diffraction (XRD) analysis results show that the peak of XRD PbI2 film, and sharp diffraction PbI2 belongs to the sample characteristic peak, less impurity content, structure is complete. Ultraviolet (UV) visible through spectral analysis results show that, in 300nm ~ 500nm PbI2 film when the minimum transmission wave direction, then to rise dramatically and transmission rate increased with the temperature, the absorption wavelength edge "blue shift", the wider, Photoluminescence spectroscopy (PL) PbI2 analysis shows that the film photoluminescence from freedom, the excitation induced polarization state induced polarization, and the son of the radiation effect of yuan composite warp.

英语九级水平，很专业，相信我。

化合物半导体薄膜 钙钛矿是半导体

飞秒检测发现钙钛矿型太阳能电池（perovskite solar cells），是利用钙钛矿型的有机金属卤化物半导体作为吸光材料的太阳能电池，即是将染料敏化太阳能电池中的染料作了相应的替换。在这种钙钛矿结构（，图1）中，A一般为甲胺基，和也有报道；B多为金属Pb原子，金属Sn也有少量报道；X为Cl、Br、I等卤素单原子或混合原子。目前在高效钙钛矿型太阳能电池中，最常见的钙钛矿材料是碘化铅甲胺（），它的带隙约为1.5 eV。

在接受太阳光照射时，钙钛矿层首先吸收光子产生电子-空穴对。由于钙钛矿材激子束缚能的差异，这些载流子或者成为自由载流子，或者形成激子。而且，因为这些钙钛矿材料往往具有较低的载流子复合几率和较高的载流子迁移率，所以载流子的扩散距离和寿命较长。例如，的载流子扩散长度至少为100nm，而的扩散长度甚至大于。这就是钙钛矿太阳能电池优异性能的来源。

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