Numerical simulation of n-TiO2/p-CIGS solar cell

Gagandeep, .; Singh, Mukhtiyar; Kumar, Ramesh; Kumari, Sonia

doi:10.1063/5.0017203

Cited by 1 publication

(1 citation statement)

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“…(7) The simulation study of TiO 2 as a buffer layer in CIGS solar cells using AFORS-HET software gives an efficiency of 16.03%. (8) Reports suggest that adding rare-earth elements to TiO 2 can refine the band gap, increase carrier lifetime, and improve charge transport. (7) In this study, Erbium (Er), one of the rare earth materials, was used as a dopant, hoping to potentially enrich the performance of the TiO 2 buffer layer.…”

Section: Introductionmentioning

confidence: 99%

Enhancing CIGS Solar Cell Performance with Erbium-Doped TiO2 Nanomaterial: Simulation Study

Jayachithra,

Elampari,

Meena

2023

IJST

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Objectives: To find a proper rare earth-doped metal-oxide-based buffer layer for CIGS solar cells with improved performance that has less harmfulness than cadmium. Methods: This study concentrated on the synthesis of pure and Erdoped TiO 2 nanomaterials via microwave-assisted hydrothermal method and its characterization results. Additionally, to analyze the performance of TiO 2 and Er-doped TiO 2 as a buffer layer in a CIGS solar cell, numerical simulations were performed using the SCAPS-1D (Solar cell capacitance simulator) software. Findings: The positive outcomes came from the characterization results, which revealed that the synthesized nanomaterials have an anatase phase, microscopic crystallite size, and flower-like shape. The band gap effectively decreases from 3.45 eV for pure TiO 2 to 2.75 eV for Er-doped TiO 2 , which effectively increases the absorption in the visible portion of the solar spectrum. The refractive indices of pure and Er-doped TiO 2 were calculated as 2.37 and 2.50 respectively from their corresponding band gaps. The results from the simulations showed that using a single buffer layer of Er-doped TiO 2 uplifted the performance of the CIGS solar cell, resulting in higher open circuit voltage, increased short-circuit current density with overall efficiency, η = 25.31% compared to pure TiO 2 and CdS-based dual buffer layers. Novelty: For the first time, the Er-TiO 2 nanomaterial was studied as buffer layer material. The numerical simulation and characterization findings justify the adoption of Er-TiO 2 as a buffer layer in CIGS solar cells.

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Section: Introductionmentioning

confidence: 99%