Dual Bias Modulation Electrostatic Force Microscopy on Cu(In, Ga)Se2

Dual Bias Modulation Electrostatic Force Microscopy on Cu(In, Ga)Se2
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Cu(In, Ga)Se2 的双偏压调制静电力显微镜

DOI:
10.1109/pvsc45281.2020.9300457
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发表时间:
2020
期刊:
2020 47th IEEE Photovoltaic Specialists Conference (PVSC)
影响因子:
--
通讯作者:
Takuji Takahashi
Takuji Takahashi
中科院分区:
--
文献类型:
--
作者:
Ryota Fukuzawa;T. Minemoto;Takuji Takahashi

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我们对 Cu(In, Ga)Se2 [CIGS] 薄膜和去除 CdS 后的 CdS/CIGS 样品进行了双偏压调制静电力显微镜 (DEFM),以局部检查 CIGS 表面附近的子带隙能级,并通过测量耗尽电容的频率响应来讨论 Cd 扩散对此类能级的影响。从偏压调制的低频或高频条件下 DEFM 获取的静电力信号中,我们发现作为电荷陷阱的深亚带隙能级尤其存在于生长的 CIGS 中的 GB 周围,但 CdS 沉积引起的 Cd 扩散钝化了如此深的能级。
We have performed dual bias modulation electrostatic force microscopy (DEFM) on a Cu(In, Ga)Se2 [CIGS] thin film and a CdS/CIGS sample after CdS removal to examine sub-bandgap levels near the CIGS surface locally and to discuss an influence of Cd diffusion on such levels by measuring of a frequency response of depletion capacitance. From electrostatic force signals acquired by DEFM under low or high frequency conditions for bias modulation, we found that deep sub-bandgap levels acting as charge traps existed especially around GB in the as-grown CIGS but that the Cd diffusion induced by CdS deposition passivated such deep levels.
Cu(In,Ga)Se2 太阳能电池的光辅助开尔文探针力显微镜
DOI: --
发表时间: 2012
期刊:
影响因子: --
作者:
T. Takahashi;Y. Nakajima;M. Takihara;and T. Minemoto
通讯作者: and T. Minemoto