Оптимізація продуктивності двобічних тонкоплівкових сонячних елементів CZTS для досягнення максимальної ефективності перетворення енергії
Kesterite Cu2ZnSnS4 (CZTS) is among the most promising absorber materials for thin-film solar cells due to its direct bandgap (1.1–1.5 eV), high absorption coefficient (>104 cm−1), earth abundance, non-toxicity, and low production cost. Despite these advantages, the efficiency of CZTS-bas...
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| Дата: | 2026 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Publishing house "Academperiodika"
2026
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| Теми: | |
| Онлайн доступ: | https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2023946 |
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| Назва журналу: | Ukrainian Journal of Physics |
Репозитарії
Ukrainian Journal of Physics| Резюме: | Kesterite Cu2ZnSnS4 (CZTS) is among the most promising absorber materials for thin-film solar cells due to its direct bandgap (1.1–1.5 eV), high absorption coefficient (>104 cm−1), earth abundance, non-toxicity, and low production cost. Despite these advantages, the efficiency of CZTS-based devices remains limited by secondary phase formation, electronic defects, and fabrication instability. In this work, a numerical model for a bifacial CZTS thinfilm solar cell is developed using a self-consistent Poisson–drift–diffusion framework implemented in MATLAB/Simulink. By optimising the absorber and buffer layer thicknesses, a maximum power conversion efficiency (PCE) of 19.66% is achieved for a bifacial CZTS device with a 4 μm absorber and a 10 nm CdS buffer layer. This result exceeds reported experimental efficiencies for comparable CZTS heterojunctions (approximately 15.8%) while remaining below the Shockley–Queisser theoretical limit of 32.4%. The findings highlight the potential of bifacial CZTS architectures as an effective strategy for enhancing photovoltaic performance. |
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| DOI: | 10.15407/ujpe71.5.469 |