Devendra Kc1, Deb Kumar Shah2,3, M Shaheer Akhtar3,4, Mira Park5, Chong Yeal Kim4, O-Bong Yang2,3,4, Bishweshwar Pant5. 1. Electrical Department, Gabriel Elektro AS, 9700 Lakselv, Norway. 2. School of Semiconductor and Chemical Engineering, Jeonbuk National University, Jeonju 54896, Korea. 3. Graduate School of Integrated Energy-AI, Jeonbuk National University, Jeonju 54896, Korea. 4. New and Renewable Energy Materials Development Center (NewREC), Jeonbuk National University, Jeonbuk 56332, Korea. 5. Carbon Composite Energy Nanomaterials Research Center, Woosuk University, Wanju, Chonbuk 55338, Korea.
Abstract
This paper numerically explores the possibility of ultrathin layering and high efficiency of graphene as a back surface field (BSF) based on a CdTe solar cell by Personal computer one-dimensional (PC1D) simulation. CdTe solar cells have been characterized and studied by varying the carrier lifetime, doping concentration, thickness, and bandgap of the graphene layer. With simulation results, the highest short-circuit current (Isc = 2.09 A), power conversion efficiency (h = 15%), and quantum efficiency (QE ~ 85%) were achieved at a carrier lifetime of 1 × 103 ms and a doping concentration of 1 × 1017 cm-3 of graphene as a BSF layer-based CdTe solar cell. The thickness of the graphene BSF layer (1 mm) was proven the ultrathin, optimal, and obtainable for the fabrication of high-performance CdTe solar cells, confirming the suitability of graphene material as a BSF. This simulation confirmed that a CdTe solar cell with the proposed graphene as the BSF layer might be highly efficient with optimized parameters for fabrication.
This paper numerically explores the possibility of ultrathin layering and high efficiency of graphene as a back surface field (n>an class="Chemical">BSF) based on a CdTe solar cell by Personal computer one-dimensional (PC1D) simulation. CdTe solar cells have been characterized and studied by varying the carrier lifetime, doping concentration, thickness, and bandgap of the graphene layer. With simulation results, the highest short-circuit current (Isc = 2.09 A), power conversion efficiency (h = 15%), and quantum efficiency (QE ~ 85%) were achieved at a carrier lifetime of 1 × 103 ms and a doping concentration of 1 × 1017 cm-3 of graphene as a BSF layer-based CdTe solar cell. The thickness of the grapheneBSF layer (1 mm) was proven the ultrathin, optimal, and obtainable for the fabrication of high-performance CdTe solar cells, confirming the suitability of graphene material as a BSF. This simulation confirmed that a CdTe solar cell with the proposed graphene as the BSF layer might be highly efficient with optimized parameters for fabrication.
Entities:
Keywords:
CdTe solar cell; back surface; efficiency; graphene; simulation
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