Sol-Gel 방법으로 제작된 Cd_xZn_(1-x)O 박막의 조성비에 따른 구조적 및 광학적 특성

• Published in: 대한금속·재료학회지, 49(7) pp. 583 - 588
• Main Authors: 천민종, 김소아람, 남기웅, 임광국, 김민수, 임재영, 김범근
• Format: Journal Article
• Language: Korean
• Published: 대한금속·재료학회 01.07.2011
• Subjects: 재료공학
• ISSN: 1738-8228; 2288-8241

Cd_xZn_(1-x)O thin films were grown on quartz substrates by using the sol-gel spin-coating method. The mole fraction, x, of the Cd_xZn_(1-x)O thin films was controlled from 0 to 1 by changes in the content ratio of the cadmium acetate dehydrate [Cd(CH_3COO)_2·2H_2O] and zinc acetate dehydrate [Zn(CH_3COO)_2·2H_2O]. The effects of the mole fraction on the morphological, structural, and optical properties of the Cd_xZn_(1-x)O thin films were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and UV-visible spectroscopy. The Cd_xZn_(1-x)O thin films exhibited the polygonal surface morphology and their grain size was increased ranging from 42.1 to 63.9 nm with the increase in the mole fraction. It was observed that the absorption bandgap of the Cd_xZn_(1-x)O thin films decreased from 3.25 to 2.16 eV as the mole fraction increased and the Urbach energy (E_U) values changed inversely to the optical bandgap of the Cd_xZn_(1-x)O thin films KCI Citation Count: 9