화학적 용액성장법에 의한 ZnS 박막의 제조 시 ammonia 및 Na2EDTA의 영향

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김관태;이해기;박병옥
Kim, Gwan-Tae;Lee, Hae-Ki;Park, Byung-Ok

  • 투고 : 2013.05.08
  • 심사 : 2013.05.31
  • 발행 : 2013.06.30

초록

ZnS thin films were prepared on glass substrate by using chemical bath deposition method. The influence of ammonia ($NH_4OH$) and $Na_2EDTA$ ($Na_2C_{10}H_{16}N_2O_8$) as complexing agents on structural and optical properties of ZnS thin films were investigated. Zinc acetate dihydrate ($Zn(CH_3COO)_2{\cdot}2H_2O$) and thiourea ($H_2NCSNH_2$) were used as a starting materials and distilled water was used as a solvent. All ZnS thin films, regardless of a kind of complexing agents, had the hexagonal structure (${\alpha}$-ZnS) and had a preferred <101> orientation. ZnS thin films, with 4 M ammonia and with 4 M ammonia and 0.1 M $Na_2EDTA$, had the highest <101> peak intensity. In addition, their average particle size are 280 nm and 220 nm, respectively. The average optical transmittances of all films were higher than 60% in the visible range. The optical direct band gap values of films were about 3.6~3.8 eV.

키워드

ZnS thin film;Chemical bath deposition;Ammonia;$Na_2EDTA$

참고문헌

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과제정보

연구 과제 주관 기관 : 경북대학교