Small molecular organic photovoltaic cells with exciton blocking layer at anode interface for improved device performance

Masaya Hirade; Chihaya Adachi

doi:10.1063/1.3650472

Small molecular organic photovoltaic cells with exciton blocking layer at anode interface for improved device performance

Masaya Hirade, Chihaya Adachi

Applied Chemistry

Research output: Contribution to journal › Article › peer-review

86 Citations (Scopus)

Abstract

We demonstrate enhanced power conversion efficiency (_PCE) for small molecular-based organic photovoltaic cells with an exciton blocking layer (ExBL) at the anode/donor interface. Although poly(3,4-ethylenedioxythiophene): poly(4-styrene sulfonate) (PEDOT:PSS) films are widely used as anodic buffer layers, they also act as exciton quenchers. To prevent exciton quenching, we introduced a tris[4-(5-phenyl thiophen-2-yl)phenyl]amine layer between the donor and the PEDOT:PSS layer and clarified its effect. By a combination of dual ExBLs at both the anode and cathode sides, we achieved significantly enhanced short circuit current and _PCE values; the highest _PCE 5.24 was obtained by optimizing the device parameters.

Original language	English
Article number	153302
Journal	Applied Physics Letters
Volume	99
Issue number	15
DOIs	https://doi.org/10.1063/1.3650472
Publication status	Published - Oct 10 2011

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3650472

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title = "Small molecular organic photovoltaic cells with exciton blocking layer at anode interface for improved device performance",

abstract = "We demonstrate enhanced power conversion efficiency (PCE) for small molecular-based organic photovoltaic cells with an exciton blocking layer (ExBL) at the anode/donor interface. Although poly(3,4-ethylenedioxythiophene): poly(4-styrene sulfonate) (PEDOT:PSS) films are widely used as anodic buffer layers, they also act as exciton quenchers. To prevent exciton quenching, we introduced a tris[4-(5-phenyl thiophen-2-yl)phenyl]amine layer between the donor and the PEDOT:PSS layer and clarified its effect. By a combination of dual ExBLs at both the anode and cathode sides, we achieved significantly enhanced short circuit current and PCE values; the highest PCE 5.24 was obtained by optimizing the device parameters.",

author = "Masaya Hirade and Chihaya Adachi",

note = "Funding Information: We sincerely thank Dr. William Potscavage for fruitful discussion. This work was supported by a Grant-in-aid and a Fellowship from the Japan Society for the Promotion of Science (JSPS) and by the Global COE Program, “Science for Future Molecular Systems” from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and the New Energy and Industrial Technology Development Organization (NEDO).",

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doi = "10.1063/1.3650472",

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AU - Hirade, Masaya

AU - Adachi, Chihaya

N1 - Funding Information: We sincerely thank Dr. William Potscavage for fruitful discussion. This work was supported by a Grant-in-aid and a Fellowship from the Japan Society for the Promotion of Science (JSPS) and by the Global COE Program, “Science for Future Molecular Systems” from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and the New Energy and Industrial Technology Development Organization (NEDO).

PY - 2011/10/10

Y1 - 2011/10/10

N2 - We demonstrate enhanced power conversion efficiency (PCE) for small molecular-based organic photovoltaic cells with an exciton blocking layer (ExBL) at the anode/donor interface. Although poly(3,4-ethylenedioxythiophene): poly(4-styrene sulfonate) (PEDOT:PSS) films are widely used as anodic buffer layers, they also act as exciton quenchers. To prevent exciton quenching, we introduced a tris[4-(5-phenyl thiophen-2-yl)phenyl]amine layer between the donor and the PEDOT:PSS layer and clarified its effect. By a combination of dual ExBLs at both the anode and cathode sides, we achieved significantly enhanced short circuit current and PCE values; the highest PCE 5.24 was obtained by optimizing the device parameters.

AB - We demonstrate enhanced power conversion efficiency (PCE) for small molecular-based organic photovoltaic cells with an exciton blocking layer (ExBL) at the anode/donor interface. Although poly(3,4-ethylenedioxythiophene): poly(4-styrene sulfonate) (PEDOT:PSS) films are widely used as anodic buffer layers, they also act as exciton quenchers. To prevent exciton quenching, we introduced a tris[4-(5-phenyl thiophen-2-yl)phenyl]amine layer between the donor and the PEDOT:PSS layer and clarified its effect. By a combination of dual ExBLs at both the anode and cathode sides, we achieved significantly enhanced short circuit current and PCE values; the highest PCE 5.24 was obtained by optimizing the device parameters.

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Small molecular organic photovoltaic cells with exciton blocking layer at anode interface for improved device performance

Abstract

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