| 王琳,马爱斌,陈建清,江静华,杨东辉,孙甲鹏,王家佳.无铅锡钙钛矿太阳电池薄膜的制备工艺研究[J].材料导报,2016,30(14):23-28 |
| 无铅锡钙钛矿太阳电池薄膜的制备工艺研究 |
| Preparation of Lead-free Tin Halide Perovskite Thin Films for Solar Cells |
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| DOI：10.11896/j.issn.1005-023X.2016.14.006 |
| 中文关键词: 钙钛矿 制备工艺 形貌 带隙 吸光 |
| 英文关键词: perovskite, preparation process, morphology, band gap, absorption |
| 基金项目:江苏省产学研联合创新资金前瞻性联合研究项目(BY2015002-02) |
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| 中文摘要: |
| 采用一步溶液法制备了锡钙钛矿电池薄膜,研究了前驱体溶液浓度、退火温度和掺杂对薄膜成膜性能的影响。分别利用扫描电镜(SEM)、XRD和傅里叶红外光谱仪(FTIR)对薄膜的形貌、物相、吸收率和禁带宽度进行表征和测试。研究结果表明,当前驱体溶液浓度为30%、退火温度为100 ℃时的成膜性能较好,所制备的钙钛矿薄膜更加平整和光滑,覆盖率较高。CH3NH3SnI3成分的钙钛矿薄膜具有最低的禁带宽度,其吸光性能优于其他成分的钙钛矿薄膜。掺杂Br、Cl离子会导致CH3NH3SnI3成分的钙钛矿薄膜的禁带宽度增加,而吸光性能和结晶性能降低。 |
| 英文摘要: |
| Tin halide perovskite thin films was prepared via one-step spin coating. Effects of the precursor solution concentration, annealing temperature and doping on the film-forming properties were studied. The morphology, phase and optical absorption of the films were characterized by the scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectrometer (FTIR), respectively. The results showed that a flater and smoother film with higher coverage could be obtained under the condition of precursor solution concentration of 30% and the annealing temperature of 100 °C. CH3NH3SnI3 perovskite films with the lowest band gap had better light absorption properties than the perovskite films with other compositions. Br-, Cl- doping would lead to the increase of band gap and reduction of light absorption properties. |
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