Toward high efficiency of inverted organic solar cells: Concurrent improvement in optical and electrical properties of electron transport layers

S. H. Tsai; S. T. Ho; H. J. Jhuo; C. R. Ho; S. A. Chen; Jr Hau He

doi:10.1063/1.4812981

Toward high efficiency of inverted organic solar cells: Concurrent improvement in optical and electrical properties of electron transport layers

S. H. Tsai, S. T. Ho, H. J. Jhuo, C. R. Ho, S. A. Chen, Jr Hau He^*

^*Corresponding author for this work

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

21 Scopus citations

Abstract

The conversion efficiency (η) of organic solar cells (OSCs) constructed with ITO/ZnO/P3HT:PCBM/PEDOT:PSS/Ag is improved by incorporating Al into ZnO films (AZO) as electron transport layers (ETLs). Compared with ZnO films, AZO-based OSCs enhance η by ∼13.9% via improving short-circuit photocurrent density from 10.73 to 11.12 mA cm^-2 and fill factor from 53.7% to 60.8%. Doping Al into ZnO ETLs not only optimizes band alignment between organic active layers and ETLs and increases carrier concentration, conductivity, and bandgap of ZnO films facilitating more light into OSCs but also improves the absorption of P3HT by promoting the molecular ordering of P3HT.

Original language	English (US)
Article number	253111
Journal	Applied Physics Letters
Volume	102
Issue number	25
DOIs	https://doi.org/10.1063/1.4812981
State	Published - Jun 24 2013
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by National Science Council of Taiwan (99-2622-E-002-019-CC3, 99-2112-M-002-024-MY3, 101-2622-E-002-012-CC3, and 99-2120-M-007-011) and National Taiwan University (10R70823).

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4812981

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title = "Toward high efficiency of inverted organic solar cells: Concurrent improvement in optical and electrical properties of electron transport layers",

abstract = "The conversion efficiency (η) of organic solar cells (OSCs) constructed with ITO/ZnO/P3HT:PCBM/PEDOT:PSS/Ag is improved by incorporating Al into ZnO films (AZO) as electron transport layers (ETLs). Compared with ZnO films, AZO-based OSCs enhance η by ∼13.9% via improving short-circuit photocurrent density from 10.73 to 11.12 mA cm-2 and fill factor from 53.7% to 60.8%. Doping Al into ZnO ETLs not only optimizes band alignment between organic active layers and ETLs and increases carrier concentration, conductivity, and bandgap of ZnO films facilitating more light into OSCs but also improves the absorption of P3HT by promoting the molecular ordering of P3HT.",

author = "Tsai, {S. H.} and Ho, {S. T.} and Jhuo, {H. J.} and Ho, {C. R.} and Chen, {S. A.} and He, {Jr Hau}",

note = "Funding Information: This work was supported by National Science Council of Taiwan (99-2622-E-002-019-CC3, 99-2112-M-002-024-MY3, 101-2622-E-002-012-CC3, and 99-2120-M-007-011) and National Taiwan University (10R70823).",

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language = "English (US)",

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T2 - Concurrent improvement in optical and electrical properties of electron transport layers

AU - Tsai, S. H.

AU - Ho, S. T.

AU - Jhuo, H. J.

AU - Ho, C. R.

AU - Chen, S. A.

AU - He, Jr Hau

N1 - Funding Information: This work was supported by National Science Council of Taiwan (99-2622-E-002-019-CC3, 99-2112-M-002-024-MY3, 101-2622-E-002-012-CC3, and 99-2120-M-007-011) and National Taiwan University (10R70823).

PY - 2013/6/24

Y1 - 2013/6/24

N2 - The conversion efficiency (η) of organic solar cells (OSCs) constructed with ITO/ZnO/P3HT:PCBM/PEDOT:PSS/Ag is improved by incorporating Al into ZnO films (AZO) as electron transport layers (ETLs). Compared with ZnO films, AZO-based OSCs enhance η by ∼13.9% via improving short-circuit photocurrent density from 10.73 to 11.12 mA cm-2 and fill factor from 53.7% to 60.8%. Doping Al into ZnO ETLs not only optimizes band alignment between organic active layers and ETLs and increases carrier concentration, conductivity, and bandgap of ZnO films facilitating more light into OSCs but also improves the absorption of P3HT by promoting the molecular ordering of P3HT.

AB - The conversion efficiency (η) of organic solar cells (OSCs) constructed with ITO/ZnO/P3HT:PCBM/PEDOT:PSS/Ag is improved by incorporating Al into ZnO films (AZO) as electron transport layers (ETLs). Compared with ZnO films, AZO-based OSCs enhance η by ∼13.9% via improving short-circuit photocurrent density from 10.73 to 11.12 mA cm-2 and fill factor from 53.7% to 60.8%. Doping Al into ZnO ETLs not only optimizes band alignment between organic active layers and ETLs and increases carrier concentration, conductivity, and bandgap of ZnO films facilitating more light into OSCs but also improves the absorption of P3HT by promoting the molecular ordering of P3HT.

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VL - 102

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JF - Applied Physics Letters

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ER -

Toward high efficiency of inverted organic solar cells: Concurrent improvement in optical and electrical properties of electron transport layers

Abstract

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