Large-area solar cells often suffer from reduced performance due to higher parasitic resistance offered by transparent electrodes results in charge carrier collection inefficiencies and damage during Transparent Conducting Oxides (TCOs) deposition on temperature-sensitive charge transport layers and perovskites.
This invention presents a highly efficient large-area Near-Infrared (NIR) transparent solar cell based on hybrid organic-inorganic lead halide perovskites. This device includes various layers to enhance performance and durability, utilizing novel fabrication techniques that allow for room-temperature deposition of Transparent Conducting Oxides (TCOs). It also features optimized silver bus and fingers to address charge carrier collection issues, enabling rapid and high-quality production of solar cells.
- Efficient Large-Area Solar Cell: Improved charge collection and minimized reflection loss
- Room-Temperature Deposition: Preserves the integrity of sensitive layers
- High-Quality and Rapid TCO Deposition: Ensures efficient manufacturing processes
- Dual Functionality of TCO Layer: Enhances device stability and durability Deposition power tunable between 20W and 70W
- High deposition rates up to 2 Å/s
- Versatile Material Compatibility: Suitable for various solar cell materials including inorganic halide perovskites, organic solar cells, and colloidal quantum dot solar cells
- Dual anti-reflection coating minimizes reflection loss for improved light absorption
- A protective interlayer safeguards sensitive layers during transparent conductive oxide (TCO) deposition
- Modified RF (radio frequency) magnetic sputtering system enables TCO deposition at room temperature, preserving the integrity of underlying materials like organic charge transport layers and perovskites.
- Optimized silver bus and fingers to improve charge carrier collection
- Deposition power tunable between 20W and 70W
- High deposition rates up to 2 Å/s
- Multifunctional TCO layer acts as both a conductive electrode and a moisture barrier, enhancing device stability
- Broad applicability of the deposition process to various solar cell materials beyond perovskites, including inorganic halide perovskites, organic solar cells, and colloidal quantum dot solar cells.
The prototypes include solar cells with various configurations of charge transport layers, protective layers, and TCOs, demonstrating enhanced performance and stability over large areas.
The technology is developed and optimized for large-scale fabrication, ensuring high efficiency and stability of the solar cells.
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This technology promises to make solar energy more efficient and affordable, contributing to sustainable energy solutions and reducing reliance on fossil fuels.
Renewable energy sector, Photovoltaic research and development
- Photovoltaic Power Generation: Efficient solar energy harvesting for residential, commercial, and industrial applications.
- Building-Integrated Photovoltaics (BIPV): Integration into windows and facades to generate power while maintaining transparency.
- Wearable Electronics: Powering wearable devices with lightweight and flexible solar cells.
- Agrivoltaics: Utilizing NIR transparent solar cells in agricultural settings to provide shade and generate power without significantly affecting crop growth.
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