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Comparative Analysis of Excitonic and Biexcitonic Effects on the Power Conversion Efficiency of a CdSe/CdTe/ZnTe Quantum Dot Solar Cell       
Yazarlar (2)
Murat Ünlüler
Dr. Öğr. Üyesi Fatih KOÇ Dr. Öğr. Üyesi Fatih KOÇ
Kırşehir Ahi Evran Üniversitesi, Türkiye
Devamını Göster
Özet
In this study, the power conversion efficiency (PCE) of a CdSe/CdTe/ZnTe quantum dot solar cell (QDSC) is investigated considering the influence of internal parameters such as CdSe core radius and CdTe and ZnTe shell thickness along with external parameters such as temperature and hydrostatic pressure. A comparative analysis is performed using both the original detailed balance model (ODBM) and the modified detailed balance model (MDBM). The main focus of the research is to investigate the effects of excitonic and biexcitonic effective gap energies, as well as the biexciton bound state, on the PCE in the presence of multiple exciton generation (MEG). Calculations using both ODBM and MDBM indicate that the distinct excitonic and biexcitonic effective bandgap energies, resulting from strong confinement effects in quantum dot (QD) structures, significantly affect the PCE in the presence of MEG. In addition, MDBM calculations considering the biexciton bound state show that this bound state critically affects the PCE. The discrepancy between the theoretically predicted maximum PCE and the considerably lower PCE observed in practical applications of QDSCs is also examined, along with the potential reasons for this phenomenon.
Anahtar Kelimeler
biexciton bound state | detailed balance model | excitonic and biexcitonic gap energy | quantum dot solar cells
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı Advanced Theory and Simulations
Dergi ISSN 2513-0390
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q1
Makale Dili İngilizce
Basım Tarihi 01-2025
Cilt No 8
Sayı 1
Doi Numarası 10.1002/adts.202400956
Makale Linki https://doi.org/10.1002/adts.202400956