Abstract
The efficiency of small-molecule solar cells critically depends on the match of the junction of the donor and acceptor semiconductors used in these devices to create charged carriers and on the mobility of individual components to transport holes and electrons. In the present study, a 2% efficient bilayer organic solar cell consisting of a p-type semiconductor, pentacene, and an n-type semiconductor, N,N′-diheptyl-3,4,9,10-perylenetetracarboxylic diimide (PTCDI-C 7), is fabricated. The morphology of PTCDI-C 7 interestingly follows pentacene due to the matched surface energy of these two active layers and the easily deposited PTCDI-C 7 monomers on an inclined plane of the pentacene grains. This condition results in the low trap states in the PTCDI-C 7 film and at the pentacene/PTCDI-C 7 interface for the enhancement of exciton dissociation and carrier transport compared with the photoactive layer comprised of pentacene and N,N-ditridecyl-3,4,9,10-perylenetetracarboxylic diimide (PTCDI-C 13). The detailed exciton and carrier transport mechanisms are investigated using time-resolved photoluminescence and X-ray diffraction spectroscopy.
| Original language | English |
|---|---|
| Pages (from-to) | 5284-5288 |
| Number of pages | 5 |
| Journal | Physical Chemistry Chemical Physics |
| Volume | 14 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 2012 Apr 21 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
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The importance of p-n junction interfaces for efficient small molecule-based organic solar cells. / Chou, Wei-Yang; Chang, Jay; Yen, Chia Te; Lin, Yi Sheng; Tang, Fu-Ching; Liu, Shyh Jiun; Cheng, Horng-Long; Hsu, Lien-Chung; Chen, Jen-Sue.
In: Physical Chemistry Chemical Physics, Vol. 14, No. 15, 21.04.2012, p. 5284-5288.Research output: Contribution to journal › Article
TY - JOUR
T1 - The importance of p-n junction interfaces for efficient small molecule-based organic solar cells
AU - Chou, Wei-Yang
AU - Chang, Jay
AU - Yen, Chia Te
AU - Lin, Yi Sheng
AU - Tang, Fu-Ching
AU - Liu, Shyh Jiun
AU - Cheng, Horng-Long
AU - Hsu, Lien-Chung
AU - Chen, Jen-Sue
PY - 2012/4/21
Y1 - 2012/4/21
N2 - The efficiency of small-molecule solar cells critically depends on the match of the junction of the donor and acceptor semiconductors used in these devices to create charged carriers and on the mobility of individual components to transport holes and electrons. In the present study, a 2% efficient bilayer organic solar cell consisting of a p-type semiconductor, pentacene, and an n-type semiconductor, N,N′-diheptyl-3,4,9,10-perylenetetracarboxylic diimide (PTCDI-C 7), is fabricated. The morphology of PTCDI-C 7 interestingly follows pentacene due to the matched surface energy of these two active layers and the easily deposited PTCDI-C 7 monomers on an inclined plane of the pentacene grains. This condition results in the low trap states in the PTCDI-C 7 film and at the pentacene/PTCDI-C 7 interface for the enhancement of exciton dissociation and carrier transport compared with the photoactive layer comprised of pentacene and N,N-ditridecyl-3,4,9,10-perylenetetracarboxylic diimide (PTCDI-C 13). The detailed exciton and carrier transport mechanisms are investigated using time-resolved photoluminescence and X-ray diffraction spectroscopy.
AB - The efficiency of small-molecule solar cells critically depends on the match of the junction of the donor and acceptor semiconductors used in these devices to create charged carriers and on the mobility of individual components to transport holes and electrons. In the present study, a 2% efficient bilayer organic solar cell consisting of a p-type semiconductor, pentacene, and an n-type semiconductor, N,N′-diheptyl-3,4,9,10-perylenetetracarboxylic diimide (PTCDI-C 7), is fabricated. The morphology of PTCDI-C 7 interestingly follows pentacene due to the matched surface energy of these two active layers and the easily deposited PTCDI-C 7 monomers on an inclined plane of the pentacene grains. This condition results in the low trap states in the PTCDI-C 7 film and at the pentacene/PTCDI-C 7 interface for the enhancement of exciton dissociation and carrier transport compared with the photoactive layer comprised of pentacene and N,N-ditridecyl-3,4,9,10-perylenetetracarboxylic diimide (PTCDI-C 13). The detailed exciton and carrier transport mechanisms are investigated using time-resolved photoluminescence and X-ray diffraction spectroscopy.
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U2 - 10.1039/c2cp24047e
DO - 10.1039/c2cp24047e
M3 - Article
C2 - 22402615
AN - SCOPUS:84858976345
VL - 14
SP - 5284
EP - 5288
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
SN - 1463-9076
IS - 15
ER -