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:
影响因子:
--
通讯作者:
Takuji Takahashi
中科院分区:
文献类型:
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作者:
Ryota Fukuzawa;T. Minemoto;Takuji Takahashi
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.
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