In this podcast episode, MRS Bulletin’s Laura Leay interviews Yang Yang and Yepin Zhao of the University of California, Los Angeles about a dual-function p-type soft interlayer they developed to enhance efficiency of charge transfer in organic solar cells. With the introduction of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) as the p-type material, the researchers are able to improve the efficiency of the device as well as change its optical distribution. One goal for such a device, they say, is to create a greenhouse that generates its own electricity. This study is published in ACS Nano (doi:10.1021/acsnano.1c09018).