1. Chan Ul Kim,  Ja Young Won , and Kyoung Jin Choi “Failure analysis of PEDOT:PSS/n-Si hybrid solar cells during long-term stability test”, The 48th Winter Annual Conference of the Korean Vacuum Society, February 9-11. 2015, Wellihillipark, Jeongseon, Korea

2. Chan Ul Kim, Myeong Hoon Jeong, Ja  Young Won, and Kyoung Jin Choi “Fabrication of highly efficient hybrid solar cells based on SiNWs/PEDOT:PSS”, KIEEME Annual Summer Conference 2015, June 24-26. 2015, High1 Resort Convention hotel, Jeongseon, Korea