Abstract
In the past decade, organic photovoltaics (OPV) have emerged as an intensely studied alternative energy technology. The OPV platform presents several attractive qualities, yet, the high disorder and relative low mobility of the materials comprising OPV systems remain a bottleneck to further progress. We report here a modeling methodology that quantifies the efficiency losses engendered by the low mobility of these systems. We also report a methodology that explicitly treats the charge transfer (CT) state that has been shown to influence device performance. We compare two commonly studied OPV architectures, the bilayer (BL) and blended bulk-heterojunction (BHJ), and separately investigate the sensitivity of each architecture to mobility. Our findings suggest that mismatched mobilities of the active layer components can lead to additional recombination currents. We find that the collection current is largely limited by the slow carrier; consequently, the high mobility carriers only increase the recombination current without aiding collection.
| Original language | English |
|---|---|
| Title of host publication | 2012 15th International Workshop on Computational Electronics, IWCE 2012 |
| DOIs | |
| Publication status | Published - 2012 |
| Event | 2012 15th International Workshop on Computational Electronics, IWCE 2012 - Madison, WI, United States Duration: May 22 2012 → May 25 2012 |
Other
| Other | 2012 15th International Workshop on Computational Electronics, IWCE 2012 |
|---|---|
| Country | United States |
| City | Madison, WI |
| Period | 5/22/12 → 5/25/12 |
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ASJC Scopus subject areas
- Computational Theory and Mathematics
- Electrical and Electronic Engineering
Cite this
Ascertaining the limitations of low mobility on organic solar cell performance. / Savoie, B. M.; Tan, S.; Jerome, J. W.; Shu, C. W.; Ratner, Mark A; Marks, Tobin J.
2012 15th International Workshop on Computational Electronics, IWCE 2012. 2012. 6242859.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Ascertaining the limitations of low mobility on organic solar cell performance
AU - Savoie, B. M.
AU - Tan, S.
AU - Jerome, J. W.
AU - Shu, C. W.
AU - Ratner, Mark A
AU - Marks, Tobin J
PY - 2012
Y1 - 2012
N2 - In the past decade, organic photovoltaics (OPV) have emerged as an intensely studied alternative energy technology. The OPV platform presents several attractive qualities, yet, the high disorder and relative low mobility of the materials comprising OPV systems remain a bottleneck to further progress. We report here a modeling methodology that quantifies the efficiency losses engendered by the low mobility of these systems. We also report a methodology that explicitly treats the charge transfer (CT) state that has been shown to influence device performance. We compare two commonly studied OPV architectures, the bilayer (BL) and blended bulk-heterojunction (BHJ), and separately investigate the sensitivity of each architecture to mobility. Our findings suggest that mismatched mobilities of the active layer components can lead to additional recombination currents. We find that the collection current is largely limited by the slow carrier; consequently, the high mobility carriers only increase the recombination current without aiding collection.
AB - In the past decade, organic photovoltaics (OPV) have emerged as an intensely studied alternative energy technology. The OPV platform presents several attractive qualities, yet, the high disorder and relative low mobility of the materials comprising OPV systems remain a bottleneck to further progress. We report here a modeling methodology that quantifies the efficiency losses engendered by the low mobility of these systems. We also report a methodology that explicitly treats the charge transfer (CT) state that has been shown to influence device performance. We compare two commonly studied OPV architectures, the bilayer (BL) and blended bulk-heterojunction (BHJ), and separately investigate the sensitivity of each architecture to mobility. Our findings suggest that mismatched mobilities of the active layer components can lead to additional recombination currents. We find that the collection current is largely limited by the slow carrier; consequently, the high mobility carriers only increase the recombination current without aiding collection.
UR - http://www.scopus.com/inward/record.url?scp=84866546080&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866546080&partnerID=8YFLogxK
U2 - 10.1109/IWCE.2012.6242859
DO - 10.1109/IWCE.2012.6242859
M3 - Conference contribution
AN - SCOPUS:84866546080
SN - 9781467307055
BT - 2012 15th International Workshop on Computational Electronics, IWCE 2012
ER -