2016/11/14 by Wenchao Yang, Yongsong Luo, Pengfei Guo +2 · 18 citations
Engineering · Physics and Astronomy · #Current (fluid) #Heterojunction #Leakage (economics) #Organic Electronics and Photovoltaics #Organic solar cell #Perovskite Materials and Applications #Perspective (graphical) #Polymer solar cell #Silicon and Solar Cell Technologies #Voltage #Work (physics) #cond-mat.mtrl-sci
paper · pdf · doi:10.1103/physrevapplied.7.044017
published in Physical Review Applied 7(4) (American Physical Society)
arxiv created 2016/11/14 · openalex created_date 2017/01/26 · openalex publication_date 2017/04/19 · arxiv updated 2017/06/09 · openalex updated_date 2026/08/05
Organic bulk heterojunction solar cells suffer from a huge, nonmonotonic loss of open-circuit voltage V_o\phantom\rule00exc at low temperatures, which thwarts their practical application. The authors incorporate energetic disorder into a drift-diffusion model to study the V_o\phantom\rule00exc-T relations under various working conditions. In reproducing the empirical observations, they find that disorder-suppressed carrier mobility is the culprit. This work provides a comprehensive picture from the charge-dynamics perspective that will facilitate the engineering of this emerging class of devices.