B309+银掺杂的铜铟镓硒薄膜和器件性能研究+王晨
Fig.4 (a) PL spectra of the absorbers with different AAC of A0–A6, respectively. (b) The PL spectrum of sample C6, in which the Ag in A6 is replaced with the equivalent amount of Cu. (c) The value of GGI and Eg with different AAC. 新能源材料制备与加工/Preparation and Processing of New Energy Materials 银掺杂的铜铟镓硒薄膜和器件性能研究 Effects of silver-doping on CIGS and Device Performances Chen Wang a , Daming Zhuang* , a , Ming Zhao a , Yuxian Li a , Jianyong Zhai a , Hao Tong a a: School of Materials Science and Engineering, Tsinghua University, 100084 Beijing, P. R. China Email: w-c17@mails.tsinghua.edu.cn Experimental Results and discussion 样品制备： 所有预制膜均采用磁控溅 射法制 备，退 火工艺 参照参 考文献 [2] 。 相关样品成分表： Introduction 铜铟镓硒 （CIGS ） 太阳电池是具有广阔应用前景的薄膜太阳 能电池之一 。 为了进一步提高其在能源市场中的占有率， 首先需 要提高CIGS 器件的性能。 而提高薄膜质量， 钝化载流子复合是提 高器件性能的一个重要途径 。 近年来，Ag 元素的掺杂由于能够提 高吸收层带隙、 改善薄膜结晶性等影响， 受到CIGS 和铜锌锡硒 （CZTS ） 器 件研究者的广 泛关注和研究 。 但对于Ag相关影响的 原 因并未阐述清楚。 本文提出使用磁控溅射法制备Ag 薄膜和CuInGa前驱体， 之后 进行硒化退火制备吸收层与电池 。 研究了Ag 掺杂对薄膜的结晶性 的影响， 并探究了Ag 促进结晶性提高的原因。 研究并分析了Ag 掺 杂对电子学缺陷、薄膜与 器件质 量的影 响 [1,2] 。 Sample ID A0 A1 A2 A4 A6 C6 I/III 0.843 0.849 0.856 0.869 0.881 0.881 AAC 0 0.008 0.015 0.030 0.044 0 Fig.1 The surface and cross-sectional SEM images of absorbers with different AAC of (a) A0, (b) A1, (c) A2, (d) A4, and (e) A6, respectively. (f) presents the surface and crosssectional SEM images of the sample C6, in which the Ag in A6 is replaced with the equivalent amount of Cu. Fig.2 DSC patterns of (a-1) CuSe, (b) Ag2Se, (c) CuInSe2, (d) AgInSe2, (a-2) Cu2Se. Fig.3 (a) The Raman spectra of the sample A20 and sample C20. (b) The XRD patterns of the sample A0–A6, respectively. (c) FWHM values calculated from (b). Fig.5 (a) Typical J-V characteristics of the representative solar cells with different AAC of A0–A6. (b) EQE spectra of the solar cells with different AAC of A0–A6. (c) VOC, def of the cells with various AAC of A0–A6. VOC, def is the value of Eg/q- VOC, and the Eg is obtained by PL measurement. Every boxplot was based on more than five cells. Ref: [1] 10.1016/j.ceramint.2020.09.069 [2] 10.1016/j.jechem.2021.08.008
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