Device simulation and experimental validation of perovskite-cadmium telluride 4T tandem solar cell
Year: 2024
Type: article
Abstract: Developing tandem solar cells is an excellent strategy to break through the Shockley–Queisser (SQ) limit for single-junction solar cells. A major factor in developing a tandem solar cell is to make it cost-efficient with high device performance. Here, we demonstrate the proof of concept of four terminal (4T) tandem solar cell using a perovskite solar cell (PSC) as a wide bandgap (WBG) top cell and narrow bandgap (NBG) cadmium telluride (CdTe) as a bottom cell. A 4T tandem device power conversion efficiency (PCE) exceeding 23% was obtained using SCAPS (solar cell capacitance simulator) simulation, demonstrating the architecture’s feasibility. Further, we fabricated two WBG semitransparent perovskite cells with different bandgaps (1.6eV and 1.77eV) and mechanically stacked it with NBG CdTe (1.5eV) to obtain tandem efficiencies of 18.2% and 19.4% respectively. From the results, we concluded that the PSC with a bandgap of 1.77eV is more suitable to be paired with the NBG CdTe solar cell to get good device performance and effective spectral utilization. The experimental results show promising device performance and pave the way to further improve device performance by engineering the device architecture and interfaces.
Source: Frontiers in Energy Research
Authors: Harigovind Menon, Feng Yan
Institutions: University of Alabama, Arizona State University
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,795
Awards: Collaborative Research: Design and Discovery of Entropy-Stabilized Perovskite Halide Materials for Optoelectronics, Collaborative Research: Machine Learning-assisted Ultrafast Physical Vapor Deposition of High Quality, Large-area Functional Thin Films, CAREER: Photovoltaic Devices with Earth-Abundant Low Dimensional Chalcogenides, Collaborative Research: Photomechanical Behavior in Photovoltaic Semiconductors, G4552769768, Collaborative Research: DMREF: AI-enabled Automated design of ultrastrong and ultraelastic metallic alloys, PFI-TT: Highly Efficient, Scalable, and Stable Carbon-based Perovskite Solar Modules, G8046236277
OpenAlex ID: W4402722997