Journal
APPLIED PHYSICS EXPRESS
Volume 14, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.35848/1882-0786/ac28e6
Keywords
Organic Photovoltaic cell; lateral tandem cell; carrier generating layer; carrier transporting layer
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Funding
- JSPS KAKENHI [17K19110]
- Grants-in-Aid for Scientific Research [17K19110] Funding Source: KAKEN
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This study presents the fabrication and operation of organic photovoltaic cells with lateral junctions and separated carrier-generating and carrier-transporting layers. By inserting a carrier generating layer with strong visible absorption, a significant increase in photocurrent was observed. Increasing the number of unit cells in lateral tandem cells led to an increase in photocurrent while maintaining constant photovoltage. Compared to conventional vertical tandem cells, it is easier to adjust the number of unit cells in lateral tandem cells as there is no longer a need to adjust the photocurrent density flowing in each unit cell.
We report the fabrication and operation of organic photovoltaic cells with lateral junctions and separated carrier-generating and carrier-transporting layers. Significant photocurrent increase was observed by inserting carrier generating layer having strong visible absorption. For the lateral tandem cells, an increase in the number of unit cells increased the photocurrent while keeping the photovoltage constant. It is easier to increase the number of unit cells in lateral tandem cells compared to conventional vertical tandem cells because the adjustment of photocurrent density flowing in each unit cell is no longer necessary.
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