Welcome to the Organic Electronics and Nanophotonics (OEN) Laboratory in the Department of Intelligence and Information, Seoul National University. The OEN Laboratory, led by Prof. Changsoon Kim, consists of strongly motivated graduate students whose expertise lies in the field of device physics, nanophotonics, nanofabrication, and materials science. The objectives of our group are (i) dramatically improving the energy conversion efficiency of existing optoelectronic devices including organic light-emitting diodes (OLEDs) and organic and organometal halide perovskite solar cells, (ii) developing innovative optoelectronic devices such as chiral optoelectronic devices, and (iii) in-depth studies on energy conversion, nanophotonics, and device physics.