Highly sensitive UV and IR sensors are integral to missile detectors, flame sensors, and real-time measurements. Its importance is because 44% of sunlight is in the visible regions at ground level, 3% UV, and the rest is infrared. The atmosphere blocks about 77% of the Sun’s UV radiation. But, in space, at the top of the Earth’s atmosphere, 10% of 1400 W/m2 is UV, 40% visible, and 50% is in the infrared region. This data shows that it is necessary to fabricate electronic devices sensitive to UV and IR radiation for future space electronic technology advancement. In this context, the present project objective is to develop perovskite/organic semiconductor-based UV and IR sensors through solution processing techniques. Enhancement in the optical absorption in UV and IR-region is through (i) doping with suitable cations and anions; and (ii) interface junction of perovskite/organic semiconductor thin films with wide optical bandgap metal oxides, which serve as electron and hole transport layers.
Department of Sciences, School of Physical Sciences, Coimbatore
Associate Professor
Department of Physics, School of Engineering, Coimbatore