Halide Perovskite Semiconductors for Tandem Solar Cell Technology
Dinesh Kabra a
a Department of Physics, IIT Bombay, Mumbai - National Centre for Photovoltaic Research & Education (NCPRE), IIT Bombay
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV26)
Uppsala, Sweden, 2026 May 18th - 20th
Organizers: Gerrit Boschloo, Ellen Moons, Feng Gao and Anders Hagfeldt
Invited Speaker Session, Dinesh Kabra, presentation 195
Publication date: 11th March 2026

Solar photovoltaics (PV), coupled with large-scale energy storage, will be central to achieving global net-zero targets. With global PV deployment projected to grow from ~1 TW (2022) to ~75 TW by 2050, next-generation technologies must deliver higher efficiency, lower cost, and reduced carbon footprint to meet climate goals aligned with the Paris Agreement.

Metal-halide perovskites offer tunable bandgaps and exceptional optoelectronic properties, enabling tandem architectures with theoretical efficiencies beyond 45%. Industrial R&D has already demonstrated 34.9% efficiency at 1 cm² and >30% on commercial wafer sizes. At NCPRE, IIT Bombay, we have achieved 30.2% efficiency at lab scale and are actively scaling toward commercial wafer formats through our venture, ART-PV India. This talk will discuss the scientific foundations, device engineering strategies, and scalable pathways enabling high-efficiency tandem photovoltaics for energy transition.

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