A new approach for the synthesis of nanopowders and thin films of CuInGaSe (CIGS) chalcopyrite material doped with different amounts of Cr is presented. The chalcopyrite material CuInGaSe was doped using Cr to form a new doped chalcopyrite with the structure CuInxCrGaSe, where x = 0.4 and y = 0.0, 0.1, 0.2, or 0.3. The electrical properties of CuIn CrGaSe are highly dependent on the Cr content and results show these materials as promising dopants for the fabrication thin film solar cells. The CIGS nano-precursor powder was initially synthesized via an autoclave method, and then converted into thin films over transparent substrates. Both crystalline precursor powders and thin films deposited onto ITO substrates following a spin-coating process were subsequently characterized using XRD, SEM, HR-TEM, UV-visible and electrochemical impedance spectroscopy (EIS). EIS measurement was performed to evaluate the dc-conductivity of these novel materials as conductive films to be applied in solar cells.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8146074 | PMC |
| http://dx.doi.org/10.3390/nano11051093 | DOI Listing |
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