Characterization of Electrochemically Grown Crystalline CuInSe2 Thin Films
- Characterization of Electrochemically Grown Crystalline CuInSe2 Thin Films
- 구저르; 신디; 박종원; 이현경; 정광덕; 주오심
- Issue Date
- Journal of the Electrochemical Society
- VOL 156, NO 1, E8-E12
- To obtain thin films of crystalline copper indium diselenide CuInSe2 onto the conducting substrates, the electrochemical
experiments were conducted in an aqueous acidic solution of mixture of the corresponding salts. The influence of potential and
substrate onto the orientation and surface morphology of CuInSe2 encountered by an electrodeposition technique is reported. The
thin films have been characterized by X-ray diffraction XRD , field-emission scanning electron microscopy, and UV-visible
spectroscopy. The Cu:In:Se ratio of electrodeposited CuInSe2 thin films was determined to be near 1:1:2 by electron dispersive
spectroscopy. The XRD results revealed that the electrosynthesized thin film, deposited at cathodic potential of 700 mV vs
Ag/AgCl have a preferential orientation along the 112 directions for tetragonal CuInSe2. The structural and morphological
effects were observed with different substrates and potentials. The UV-visible absorption measurements indicated that the bandgap
of the CuInSe2 film is 1.15 eV.
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