Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Method for Maximizing Current Density and Voltage in Oxygen vacancy Controlled Bismuth Ferrite Based Thin Film Solar Cells
Categories for this Invention
Categories: Electronics & Circuits | Energy, Energy Storage & Renewable Energy
Industries: Renewable Energy, Solar Power, Electronics and Semiconductor Manufacturing
Applications: Photovoltaic Systems, Solar Power generation, Renewable Energy
Market: The Global Solar Cells Market was valued at $ 85 Bn in 2021 and is expected to reach $ 317.93 Bn by 2030, growing at 15.8% CAGR from 2021 to 2030.
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Problem Statement
- BiFeO3-based solar cells struggle with low current output (JSC), limiting their efficiency despite having a high VOC.
- The Impact of oxygen vacancies on both BiFeO3’s properties & solar cell performance remains unclear, showing significant hurdle in optimizing these devices.
- Balancing high JSC (mA/cm2) with sustained VOC (volts) in BFO-based solar cells requires fine-tuning film thickness, electrode setup, and doping methods, posing a crucial challenge.
- Hence, the present patent is needed, to enhance the efficiency of BiFeO3 solar cells by overcoming JSC limitations while keeping a high VOC, promising improved performance in photovoltaic uses.
Technology
The present patent technology discloses a Method for Maximizing Current Density and Voltage in Oxygen Vacancy Controlled Bismuth ferrite based thin film solar cells.
- Material Modification: Implementing techniques such as doping or compositional alterations to tailor the properties of BiFeO3, optimizing its ferroelectric behavior & enhancing its suitability for photovoltaic applications.
- Device Fabrication: Experimenting with various fabrication methods to create BiFeO3-based solar cell devices, including exploring different film thicknesses, electrode configurations, and interfaces to improve charge carrier separation and collection.
- Oxygen Vacancy Analysis: Investigating the influence of oxygen vacancies on ferroelectric properties and solar cell performance of BiFeO3, potentially leveraging these vacancies to boost device functionality.
- Performance Evaluation: Rigorous testing and analysis of the solar cell devices to quantify their short circuit current density (JSC) and open circuit voltage (VOC), aiming to optimize these parameters higher photo-conversion efficiency.
Key Features / Value Proposition
User perspective:
- Improved conductivity & photoconductivity; Better device efficiency & responsiveness.
- Consistent performance under varying conditions ensures reliability for users.
- Energy is harvested by its Photovoltaic property, reducing dependence on external power sources, provides energy efficiency.
- Customization with different compositions offer flexibility for specific user needs.
Technology Perspective:
- Use of RF sputter deposition for producing capacitor-like devices with varying compositions.
- Introducing oxygen vacancies by substitutions (Ca and Ti) enhances performance.
- Thin film technology suitable for various electronic and photovoltaic applications.
Industrial perspective:
- Advanced performance & reliability could spot the product favorably against competitors.
- Manufacturing process feasibility for large-scale production ensures commercial viability.
- Meeting industry standards & regulations ensures market acceptance & trustworthiness.
Questions about this Technology?
Contact For Licensing
sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Sudakar Chandran
Prof. Birabar Ranjit Kumar Nanda
Department of Physics
Intellectual Property
IITM IDF No: 1928
IP No: 404099 (Granted)
Technology Readiness Level
TRL-5
Validation in Relevant Environment