Recently, researchers from IIT Madras have found a way of enhancing the optoelectronic properties of tungsten diselenide. About Optoelectronics • Optoelectronics is the study and application of electronic devices and systems that source, detect and control light. • It is based on the quantum mechanical effects of light on electronic materials, especially semiconductors. • It encompasses the design, manufacture and study of electronic hardware devices that, as a result, converts electricity into photon signals for various purposes such as medical equipment, telecommunications and general science. • Some materials such as tungsten diselenide and molybdenum diselenide are being studied keenly for their optoelectronic properties. • A key property of these materials is photoluminescence, in which the material absorbs light, generating an excited state, and then light of lower frequency is re-emitted.