Interfacial engineering of eco-friendly low-cost inorganic HTMs for perovskite solar cells
Solar energy is one of the promising technologies for clean energy production. In the last decade, the photovoltaic industry has witnessed a skyrocketing growth in the power conversion efficiency of organic-inorganic perovskite solar cells (PSCs) from primal 3.8% to a confirmed 25.7%. Spiro-OMeTAD is the most commonly developed Hole-transporting material (HTM) with an expensive complicate synthesis. Besides, it needs hygroscopic doping that reduces the stability of device. To meet the necessities for future commercialization, eco-friendly low-cost HTMs have been widely investigated and studied. P-type Cu-based chalcogenide semiconductors are promising substitute because of high mobility and low cost synthesis processes. However, their efficiency is lower than the value obtained from the expensive competitor, Spiro-OMeTAD. It has been well evidenced that apart from the importance of composition and microstructure of heart of device, perovskite active layer, interfacial optimization of c
Status: Ongoing
Date of proposal: 31/08/2022
Start date: 15/02/2023
End Date: 15/03/2023
Used Instruments: UNITOV_CHOSE-S2S. Solar simulators for photovoltaic testing.
Experimental Technique: Application of inorganic nanoparticles in spin-coated and blade-coated perovskite solar cells as hole transport materials. Utilization of a homemade carbon paste in perovskite solar cell fabrication.
Experiment Description: The project aimed to integrate CuInS2 (CIS) nanoparticles as hole transport materials in perovskite solar cells and modules, using both spin-coating and blade-coating methods. The fabrication included the use of a homemade carbon paste as an electrode alternative to gold, with an emphasis on large-scale device applications.
Type Samples: Lab-scale and large-scale perovskite solar cells and modules.
Sample Description: Perovskite solar cells with structures including Glass/FTO/SnO2/perovskite layer/CuInS2/Carbon electrode. Variations in layer coating methods (spin-coated, blade-coated)
Experiment Data Type: Photovoltaic properties measured under AM 1.5 light illumination, including efficiency, current density, voltage, and fill factor.
Characterization Technics: Photovoltaic performance measurement. Efficiency distribution analysis for different device types.
Characterization Data Type: Efficiency data for lab-scale and large-scale perovskite solar cells and modules. Stability data over time for different cell configurations.
Analyzed Data: Comparative analysis of efficiencies for cells with different electrodes (homemade carbon paste, Dyenamo carbon paste, and gold). Stability analysis of devices under dark and dry conditions.
Main Targets Project: Developing carbon-based perovskite solar cells with high stability and efficiency. Comparing performance of devices with different hole transport materials and electrode types.
Main Achievements Findings: Achieved best efficiency of 14.9% for carbon-based perovskite solar cells using CIS as hole transport material. Lab-scale and large-scale perovskite solar cells and modules were fabricated, with the best efficiency of 11.29% for modules. Observed that despite lower efficiency, devices with homemade carbon electrode were more reproducible. Identified stability and reproducibility as important factors for commercializing perovskite solar cells.