Band alignment at the In2S3/Cu2ZnSnS4 heterojunction interface investigated by X-ray photoemission spectroscopy

Band alignment at the In2S3/Cu2ZnSnS4 heterojunction interface investigated by X-ray photoemission spectroscopy
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X 射线光电子能谱研究 In2S3/Cu2ZnSnS4 异质结界面的能带排列

DOI:
10.1007/s00339-014-8431-2
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发表时间:
2014-04
期刊:
Appl. Phys. A
影响因子:
--
通讯作者:
Pengyi Zhao
Pengyi Zhao
中科院分区:
其他
文献类型:
--
作者:
Lingyan Lin;Jinling Yu;Shuying Cheng;Peimin Lu;Yunfeng Lai;Sile Lin;Pengyi Zhao

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利用x射线光发射光谱研究了In2S3/Cu2ZnSnS4异质结界面处的能带对准。采用磁控溅射法制备了无污染的Cu2ZnSnS4多晶表面。测量到的价带偏移值为0.46±0.1 eV,与“传递率”法计算的价带偏移值0.49 eV吻合较好。测定导带偏置为0.82±0.1 eV,表明异质结界面处的“I型”带对准。
The band alignment at the In2S3/Cu2ZnSnS4 heterojunction interface is investigated by X-ray photoemission spectroscopy. In2S3 is thermally evaporated onto the contamination-free polycrystalline Cu2ZnSnS4 surface prepared by magnetron sputtering. The valence band offset is measured to be 0.46 ± 0.1 eV, which matches well with the valance band offset value 0.49 eV calculated using “transitivity” method. The conduction band offset is determined to be 0.82 ± 0.1 eV, indicating a ‘type I’ band alignment at the heterojunction interface.
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