Modification of a PEDOT:PSS hole transport layer for printed polymer solar cells. - Yi, Minjin; Hong, Soonil; Kim, Jae-Ryoung; Kang, Hongkyu; Lee, Jinho; Yu, Kilho; Kee, Seyoung; Lee, Woontae; Lee, Kwanghee (Solar Energy Materials & Solar Cells, 2016)