Evaluation of Optical Absorption in Cu<inf>2</inf>ZnSn(S,Se)<inf>4</inf> Absorber Within Cell Structure by Fourier Transform Photocurrent Spectroscopy
Evaluation of Optical Absorption in Cu<inf>2</inf>ZnSn(S,Se)<inf>4</inf> Absorber Within Cell Structure by Fourier Transform Photocurrent Spectroscopy
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通过傅里叶变换光电流光谱评估细胞结构内 Cu<inf>2</inf>ZnSn(S,Se)<inf>4</inf> 吸收体的光吸收
DOI：
10.1109/pvsc.2018.8547929
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Yamada Akira
中科院分区：
文献类型：
--
作者：
Itoh Takashi;Syazwana Abd Rahman Nur;Tanabe Kousei;Yamada Shigeru;Nonomura Shuichi;Sugimoto Kanta;Yamada Akira
利用傅里叶变换光电流谱（FTPS）对Cu_2ZnSn（S，Se）_4（CZTSSe）光吸收剂的吸收光谱进行了研究。对两个系列的具有不同厚度窗口层的CZTSSe薄膜太阳电池进行了FTPS测量。在光谱中，发现指数尾低于光子能量为1.2 eV。我们指出，CZTSSe光吸收剂的带隙能量和Urbach能量确定的光谱所获得的FTPS测量CZTSSe薄膜太阳能电池。
We demonstrated to evaluate optical absorption spectra of Cu2ZnSn(S,Se)4(CZTSSe) photo-absorbers within cell structure by Fourier transform photocurrent spectroscopy (FTPS). FTPS measurements were carried out for two series of CZTSSe thin film solar cells using window layer with different thickness. In the spectra, exponential tail was found below photon energy of 1.2 eV. We indicated that band gap energy and Urbach energy of CZTSSe photo-absorbers were determined from the spectra obtained by FTPS measurements for CZTSSe thin film solar cells.