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Charge‐Carrier Recombination: Effects of Processing Conditions on the Recombination Reduction in Small Molecule Bulk Heterojunction Solar Cells (Adv. Energy Mater. 14/2014)
Author(s) -
Zalar Peter,
Kuik Martijn,
Ran Niva A.,
Love John A.,
Nguyen ThucQuyen
Publication year - 2014
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201470076
Subject(s) - recombination , materials science , charge carrier , heterojunction , polymer solar cell , chemical physics , organic solar cell , molecule , crystallinity , molecular physics , optoelectronics , solar cell , polymer , physics , chemistry , quantum mechanics , biochemistry , gene , composite material
The recombination dynamics in organic bulk heterojunction solar cells have been shown to deviate from the predicted Langevin rate. Many attribute this to changes in solid‐state organization, namely enhanced crystallinity. In article number 1400438, Thuc‐Quyen Nguyen and co‐workers use simple and straight‐forward measurements to determine the carrier mobilities, recombination rates, and Langevin reduction factors for two small‐molecule bulk hetero‐junction solar cells processed with a variety of conditions. The results demonstrate that generalized correlations between enhanced solid‐state order and reduced recombination are not necessary.