Publications by authors named "Rishi E Kumar"
The inorganic perovskite CsPbI shows promising photophysical properties for a range of potential optoelectronic applications but is metastable at room temperature. To address this, Br can be alloyed into the X-site to create compositions such as CsPbIBr that are stable at room temperature but have bandgaps >1.9 eV - severely limiting solar applications.
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- A-Lab is an autonomous lab designed to speed up the discovery of new inorganic materials by using a combination of AI, computational data, and robotics.
- Over 17 days, it successfully synthesized 41 new compounds by utilizing machine learning and thermodynamic principles to optimize synthesis recipes.
- The project's findings not only highlight the potential of AI in materials science but also provide valuable insights for improving current synthesis techniques.
First principles modeling of polymer encapsulant degradation in Si photovoltaic modules.
Phys Chem Chem Phys
May 2021
Article Synopsis
- Moisture causes accelerated degradation in photovoltaic (PV) modules, leading to issues like instability, material decomposition, and corrosion, making it hard to design reliable modules.
- Experimental studies on moisture effects take years to yield results, prompting the use of first principles calculations to model how water impacts the materials in PV modules.
- Using density functional theory (DFT), researchers analyze the common polymer encapsulant EVA, finding key insights into its degradation mechanisms and the energetic processes involved when moisture is present.