Presentation Details
| Eutectic Halide Salt Engineering for Arsenic Doped CdTe Zulkifl Hussain, Adam B.Phillips, Kara B.Kile, Aparajita Dixit, Ali Abdel-Rahman Qatishat, Shawn M.Wolffersdorff, Ebin Bastola, Randy J.Ellingson, Michael J.Heben. The University of Toledo, Toledo, OH, USA |
Abstract
This works presents a systematic investigation of kinetic and thermodynamic processes occurring during Chloride Heat Treatments. Through calorimetry we show that CdCl2 is effective only in presence of oxygen due to the induced ‘fluxing’ nature. In inert atmosphere CdCl2 shows no thermodynamic change except at melting temperature, which changes the dynamics of CHT with CdCl2 alone. Alternatively, eutectic halite salt mixtures of CdCl2-XCl (X = Na or K) show promising treatment routes by retaining the phase change within the temperature range of 380°C – 440°C. Furthermore, this work also investigates the role of a thermal budget without any chloride salt, which delineates the specific changes chloride salts introduce, especially in arsenic doped CdTe. We present impact of these treatments on morphology, crystallography and photoluminescence of the in-situ arsenic doped CdTe thin films.
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