Understanding the Charge-Transfer State and Singlet Exciton Emission from Solution-Processed Small-Molecule Organic Solar Cells

作者：Ran Niva A; Kuik Martijn; Love John A; Proctor Christopher M; Nagao Ikuhiro; Bazan Guillermo C; Thuc Quyen Nguyen^*

来源：Advanced Materials, 2014, 26(43): 7405-7412.

DOI：10.1002/adma.201402423

Electroluminescence (EL) from the charge-transfer state and singlet excitons is observed at low applied voltages from high-performing small-molecule bulk-heterojunction solar cells. Singlet emission from the blends emerges upon altering the processing conditions, such as thermal annealing and processing with a solvent additive, and correlates with improved photovoltaic performance. Low-temperature EL measurements are utilized to access the physics behind the singlet emission.

• 出版日期2014-11-19