Lin Y.-H.Lu C.-H.2019-05-132019-05-13201509574522https://scholars.lib.ntu.edu.tw/handle/123456789/407364Cu(In, Ga)Se 2 powders were successfully prepared in the solvothermal reaction at 240?¢XC via using triethanolamine in the solution. The Raman spectrum and the UV¡VVis-NIR spectroscopy further confirmed that the obtained powders were single-phased Cu(In, Ga)Se 2 compound. In comparison with the conventionally solvothermal process, the required reaction duration was significantly reduced to 5?h as the concentration of triethanolamine was 2?M. Triethanolamine induces the two-dimensional growth of Cu(In, Ga)Se 2 crystals via the selective passivation, leading to the formation of plate-like particles at high concentrations of triethanolamine. The photoluminescence spectra implied that the number of surface defects was reduced via capping the nonradiative recombination centers with triethanolamine. Ethylenediamine played a similar role to triethanolamine, facilitating the synthesis of Cu(In, Ga)Se 2 . In the solvothermal process, increasing the reaction duration reduced the amount of CuInSe 2 and CuGaSe 2 , resulting in the formation of pure Cu(In, Ga)Se 2 powders. ? 2015, Springer Science+Business Media New York.journal article10.1007/s10854-015-2858-x2-s2.0-84939933571https://www.scopus.com/inward/record.uri?eid=2-s2.0-84939933571&doi=10.1007%2fs10854-015-2858-x&partnerID=40&md5=aad9e5d1b6a0473c9ae1854f78b35120