Ahn, Youngkun Kim, Young-Hwan Choi, Won-Jun Kim, Seong-Il 2024-01-20T11:00:35Z 2024-01-20T11:00:35Z 2021-09-04 2014-01 0922-6168 https://pubs.kist.re.kr/handle/201004/127308 On the basis of the detailed balance limit model, we calculated limiting efficiency, optimum bandgap energy combination, current density-voltage (J-V) characteristics, and theoretical efficiency for the candidate combination of materials GaInN/GaInP/Ga(In) As/Ge and the thermalization loss of a hybrid-connection four-junction (HC4J) solar cell structure to investigate its theoretical characteristics. Instead of the three-tunnel junctions and series-connection between subcells in a conventional four-junction solar cell, HC4J has two tunnel junctions only, with one junction having been replaced by a transparent electrode. The transparent electrode connects the topmost subcells with the top subcell. The theoretical optimum bandgap combination and the limiting efficiency of HC4J are 3.19/1.77/1.19/0.70 eV and 52.1 %, respectively. To assess the feasibility of the structure, theoretical J-V characteristics were evaluated for GaInN/GaInP/Ga(In) As/Ge with associated bandgap energies 3.20/1.87/1.22/0.7 eV. The open-circuit voltage and short-circuit current were 2.87 V and 17.18 mA/cm(2), respectively. Thermalization loss was also calculated for the candidate materials. English SPRINGER EFFICIENCY MULTICRYSTALLINE Numerical investigation of a hybrid-connection four-junction solar cell structure based on detailed balance calculation Article 10.1007/s11164-013-1457-9 1 RESEARCH ON CHEMICAL INTERMEDIATES, v.40, no.1, pp.77 - 85 RESEARCH ON CHEMICAL INTERMEDIATES 40 1 77 85 scie scopus 000329795500010 2-s2.0-84892800025 Chemistry, Multidisciplinary Chemistry Article; Proceedings Paper EFFICIENCY MULTICRYSTALLINE Hybrid-connection four-junction solar cell Limiting efficiency Optimum bandgap combination Current density-voltage characteristics Thermalization loss