Post by Indian Institute of Technology Gandhinagar

Cesium lead iodide (CsPbI₃), a type of perovskite material, has attracted significant attention for next-generation optoelectronic and energy technologies because its ordered crystal structure allows electrons to move efficiently through the material. However, controlling crystal growth remains a major challenge, as structural defects can reduce both device performance and long-term stability. To address this, researchers at IITGN developed CsPbI₃ microstructures using spin coating, a technique in which a liquid material is spread across a surface by rapid spinning. By carefully tuning the spinning conditions and introducing a special additive called triphenyl phosphite (TPPi), the team guided the material to self-assemble into unique straw-bundle-like microscopic structures. This controlled crystal growth improved crystal quality, reduced surface defects, and enhanced charge transport through the material. The researchers also observed that TPPi modified the optical properties of CsPbI₃ and enabled the material to behave more like an efficient Schottky diode, an electronic component that allows electrical current to flow quickly and efficiently in one direction with minimal energy loss. Using advanced characterization techniques, the team further confirmed the formation of a clean and stable crystal structure while demonstrating improved light absorption and electrical behaviour in the TPPi-treated material. These findings could help advance more stable, efficient, and durable energy and optoelectronic technologies, supporting the development of improved renewable energy systems and next-generation electronic devices. The team includes Prof Krista R Khiangte, Subha Maity, Solma Hansda , VV Tharundev, SR Vigneshwari, and Dushyant Singh. To read more, click the link in bio. https://zurl.co/h6EN4 #RnD #IITGN #IITGNResearchCapsules #ResearchCapsule #IITGNResearchers #PerovskiteMaterials #CsPbI3 #MaterialsScience #Nanomaterials #Optoelectronics #SemiconductorResearch #CrystalEngineering #Nanotechnology #SolarCellResearch #Photodetector #SchottkyDiode #EnergyMaterials #RenewableEnergy #AdvancedMaterials #Photonics #ElectronicMaterials #ThinFilms #ResearchInnovation #IITGandhinagar MINISTRY OF EDUCATION, GOVERNMENT OF INDIA | Department of Science & Technology, Government of India | Anusandhan National Research Foundation (ANRF) | The Press Trust Of India Ltd.- PTI | Krista R Khiangte | Dr. Dushyant Singh | Subha Maity | Solma Hansda | Tharundev V V | Vigneshwari Sathishbabu R