Li, T.-C.; Chang, C.-W.; Tai, C.-C.; Ho, J.-J.; Hsieh, T.-P.; Liu, Y.-T.; Lu, T.-L. Optoelectronic Effects of Copper–Indium–Gallium–Sulfur (CIGS2)-Solar Cells Prepared by Three-Stage Co-Evaporation Process Technology. Micromachines2023, 14, 1709.
Li, T.-C.; Chang, C.-W.; Tai, C.-C.; Ho, J.-J.; Hsieh, T.-P.; Liu, Y.-T.; Lu, T.-L. Optoelectronic Effects of Copper–Indium–Gallium–Sulfur (CIGS2)-Solar Cells Prepared by Three-Stage Co-Evaporation Process Technology. Micromachines 2023, 14, 1709.
Li, T.-C.; Chang, C.-W.; Tai, C.-C.; Ho, J.-J.; Hsieh, T.-P.; Liu, Y.-T.; Lu, T.-L. Optoelectronic Effects of Copper–Indium–Gallium–Sulfur (CIGS2)-Solar Cells Prepared by Three-Stage Co-Evaporation Process Technology. Micromachines2023, 14, 1709.
Li, T.-C.; Chang, C.-W.; Tai, C.-C.; Ho, J.-J.; Hsieh, T.-P.; Liu, Y.-T.; Lu, T.-L. Optoelectronic Effects of Copper–Indium–Gallium–Sulfur (CIGS2)-Solar Cells Prepared by Three-Stage Co-Evaporation Process Technology. Micromachines 2023, 14, 1709.
Abstract
In this paper, the performance of Cu-(In,Ga)-S2 (CIGS2) solar cells with adjusting composite CGI-ratio absorber is explored and compared through an improved three-stage co-evaporation technique. For co-evaporating CIGS2 absorber as a less toxic alternative to Cd-containing film, we analyse the effect of the CGI-ratio stoichiometry and crystallinity, and explore its opto-electric sensing characteristic of individual solar cell. The results of this research signify the potential of high-performance CIGS2-absorption solar cells for photovoltaic (PV)-module industrial applications. For the optimal CIGS2-absorption film (CGI=0.95), the Raman main-phase signal (A1) falls at 291 cm-1, which is excited by the 532-nm line of Ar+-laser. Using photo-luminescence (PL) spectroscopy, the corresponding main-peak bandgaps measured is 1.59 eV at the same CGI-ratio film. Meanwhile, the best conversion efficiency (=3.212%) and the average external quantum efficiency (EQE=51.1% in the visible-wavelength region) of photo-electric properties were achieved for the developed CIGS2-solar cells (CGI=0.95). The discoveries of this CIGS2-absorption PV research provide a new scientific understanding of solar cells. Moreover, this research undeniably contributes to a major advancement towards practical PV-module applications and can help more to build an eco-friendly community.
Keywords
Cu-(In,Ga)-S2 (CIGS2) solar cells; Three-stage co-evaporation technique; CGI-ratio stoichiometry; Opto-electric sensing performance; Eco-friendly community
Subject
Chemistry and Materials Science, Materials Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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