Presentation 2012-05-18
H_2O_2 Treatment of the Cu_2O Thin Films deposited by the Electrochemical method
Ying Song, M. Ichimura,
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Abstract(in English) Cu_2O is considered to be promising as an absorber layer material of solar cells, but its band gap is larger than the optimum one. Therefore, we attempted to oxidize Cu_2O using H_2O_2 to increase oxygen ratio and decrease band gap. Cu_2O thin films were deposited on indium-tin-oxide-coated glass from an aqueous solution containing CuSO_4, lactic acid and KOH by the galvanostatic electrochemical deposition at 40℃ with current density of -1mA/cm^2. Then, the as-prepared copper oxide thin film was dipped in H_2O_2 (30%) at 90℃ to oxidize for 10, 20 or 30 minutes. By the H_2O_2 treatment, the oxygen content was increased, and the band gap was decreased.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Cu_2O thin film / H_2O_2 treatment / photo-absorption / composition ratio
Paper # ED2012-35,CPM2012-19,SDM2012-37
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Committee SDM
Conference Date 2012/5/10(1days)
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Registration To Silicon Device and Materials (SDM)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) H_2O_2 Treatment of the Cu_2O Thin Films deposited by the Electrochemical method
Sub Title (in English)
Keyword(1) Cu_2O thin film
Keyword(2) H_2O_2 treatment
Keyword(3) photo-absorption
Keyword(4) composition ratio
1st Author's Name Ying Song
1st Author's Affiliation Dept. Eng. Phys., Electronics, Mech., Nagoya Institute of Technology()
2nd Author's Name M. Ichimura
2nd Author's Affiliation Dept. Eng. Phys., Electronics, Mech., Nagoya Institute of Technology
Date 2012-05-18
Paper # ED2012-35,CPM2012-19,SDM2012-37
Volume (vol) vol.112
Number (no) 34
Page pp.pp.-
#Pages 4
Date of Issue