Research

Perovskite based Optoelectronics

Perovskite refers to a class of materials that follow the ABX₃ crystal structure. In our research, we focus on lead halide perovskites, where A-site cations—such as methylammonium or formamidinium—are encapsulated within an octahedral cage formed by lead and halide ions. For optoelectronic applications, maintaining a tolerance factor between 0.75 and 1.11 is crucial to ensure the stability of the perovskite structure.

Halide-based perovskites have attracted considerable attention for next-generation solar cells due to several key advantages. First, their ABX₃ structure allows for tunable bandgaps through compositional adjustments, such as varying the halide stoichiometry. This tunability enables a wide range of applications, from tandem photovoltaics to photodetectors, by covering the entire visible wavelength range. Second, unlike conventional semiconductors like silicon, which require high-temperature processing, perovskite solar cells can be fabricated at low temperatures using solution processing methods. This not only reduces energy consumption but also facilitates large-scale production.

Additionally, perovskites exhibit excellent intrinsic optoelectronic properties, including a high absorption coefficient, low exciton binding energy, long carrier lifetimes, and ambipolar charge transport. These characteristics make them highly promising for applications in lightweight and versatile devices, such as drones and aircraft.

Ultra Lightweight Flexible Devices

Research in lightweight flexible devices is crucial because they offer enhanced portability and versatility across diverse applications, improved mechanical resilience that allows them to withstand bending, twisting, and stretching without compromising performance, and the potential for energy-efficient, cost-effective production through low-temperature, solution-based fabrication methods that support sustainable, large-scale deployment.

Electrochemical Cells powered By Multi-junction Photovoltaics

Our research focuses on developing sustainable chemical production methods through innovative approaches to ammonia synthesis, hydrogen generation, and carbon dioxide reduction. We aim to harness photovoltaic systems as independent power sources to drive these processes efficiently. In particular, our work leverages tandem photovoltaic devices to maximize energy conversion efficiency. The integration of high-efficiency tandem solar cells enables us to optimize the overall energy input for the chemical reactions. This approach not only enhances energy efficiency but also significantly reduces reliance on conventional power grids. By combining advanced materials science and catalysis with renewable energy engineering, we are exploring new pathways for green chemical production. Our goal is to develop a scalable framework that minimizes greenhouse gas emissions while ensuring economic viability. Ultimately, our research paves the way for a sustainable future in energy and chemical production.