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

被引：28

作者：

Ran, Niva A. ^{[1
]}

Kuik, Martijn ^{[1
]}

Love, John A. ^{[2
]}

Proctor, Christopher M. ^{[2
]}

Nagao, Ikuhiro ^{[1
]}

Bazan, Guillermo C. ^{[1
]}

Thuc-Quyen Nguyen ^{[1
,3
]}

机构：

[1] Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Dept Chem & Biochem, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[3] King Abdulaziz Univ, Fac Sci, Dept Chem, Jeddah, Saudi Arabia

来源：

ADVANCED MATERIALS | 2014年 / 26卷 / 43期

基金：

美国国家科学基金会;

关键词：

OPEN-CIRCUIT VOLTAGE; POLYFLUORENE COPOLYMER; BULK HETEROJUNCTIONS; PHASE-SEPARATION; ENERGY-LOSSES; POLYMER; EFFICIENCY; DONOR; RECOMBINATION; ACCEPTOR;

D O I：

10.1002/adma.201402423

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：7405 / 7412

页数：8

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