Organic photovoltaic cells based on a medium-bandgap phosphorescent material and C 60

Nana Wang; Junsheng Yu; Yifan Zheng; Zhiqiang Guan; Yadong Jiang

doi:10.1021/jp210245a

Organic photovoltaic cells based on a medium-bandgap phosphorescent material and C ₆₀

Nana Wang
, Junsheng Yu
, Yifan Zheng
, Zhiqiang Guan
, Yadong Jiang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

30 Citations (Scopus)

Abstract

Organic photovoltaic (OPV) cells using a medium-bandgap phosphorescent material of bis(1,2-dipheny1-1H-benzoimidazole) iridium (acetylacetonate) [(pbi) ₂Ir(acac)] as an electron-donating layer were fabricated. An S-shaped kink was observed in the current-voltage curves with the increase in (pbi) ₂Ir(acac) thickness. Two ways of using different hole transport layers to reduce interfacial energy step and doping to improve charge carrier mobility were used to investigate the origin of the kink. The results showed that this anomalous feature is due to the presence of large interfacial energy step between the anode/donor-interface and the low hole mobility of (pbi) ₂Ir(acac). An improved power conversion efficiency of 2.23% under AM 1.5 solar illumination at an intensity of 100 mW/cm ² was obtained using N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl-4, 4′-diamine to minimize the energy barrier for charge injection. © 2012 American Chemical Society.

Original language	English
Pages (from-to)	5887-5891
Journal	Journal of Physical Chemistry C
Volume	116
Issue number	9
DOIs	https://doi.org/10.1021/jp210245a
Publication status	Published - 8 Mar 2012
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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SDG 7 Affordable and Clean Energy

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Cite this

@article{fddcacf824384821bf46883852cf9d4c,

title = "Organic photovoltaic cells based on a medium-bandgap phosphorescent material and C 60",

abstract = "Organic photovoltaic (OPV) cells using a medium-bandgap phosphorescent material of bis(1,2-dipheny1-1H-benzoimidazole) iridium (acetylacetonate) [(pbi) 2Ir(acac)] as an electron-donating layer were fabricated. An S-shaped kink was observed in the current-voltage curves with the increase in (pbi) 2Ir(acac) thickness. Two ways of using different hole transport layers to reduce interfacial energy step and doping to improve charge carrier mobility were used to investigate the origin of the kink. The results showed that this anomalous feature is due to the presence of large interfacial energy step between the anode/donor-interface and the low hole mobility of (pbi) 2Ir(acac). An improved power conversion efficiency of 2.23\% under AM 1.5 solar illumination at an intensity of 100 mW/cm 2 was obtained using N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl-4, 4′-diamine to minimize the energy barrier for charge injection. {\textcopyright} 2012 American Chemical Society.",

author = "Nana Wang and Junsheng Yu and Yifan Zheng and Zhiqiang Guan and Yadong Jiang",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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T1 - Organic photovoltaic cells based on a medium-bandgap phosphorescent material and C 60

AU - Wang, Nana

AU - Yu, Junsheng

AU - Zheng, Yifan

AU - Guan, Zhiqiang

AU - Jiang, Yadong

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2012/3/8

Y1 - 2012/3/8

N2 - Organic photovoltaic (OPV) cells using a medium-bandgap phosphorescent material of bis(1,2-dipheny1-1H-benzoimidazole) iridium (acetylacetonate) [(pbi) 2Ir(acac)] as an electron-donating layer were fabricated. An S-shaped kink was observed in the current-voltage curves with the increase in (pbi) 2Ir(acac) thickness. Two ways of using different hole transport layers to reduce interfacial energy step and doping to improve charge carrier mobility were used to investigate the origin of the kink. The results showed that this anomalous feature is due to the presence of large interfacial energy step between the anode/donor-interface and the low hole mobility of (pbi) 2Ir(acac). An improved power conversion efficiency of 2.23% under AM 1.5 solar illumination at an intensity of 100 mW/cm 2 was obtained using N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl-4, 4′-diamine to minimize the energy barrier for charge injection. © 2012 American Chemical Society.

AB - Organic photovoltaic (OPV) cells using a medium-bandgap phosphorescent material of bis(1,2-dipheny1-1H-benzoimidazole) iridium (acetylacetonate) [(pbi) 2Ir(acac)] as an electron-donating layer were fabricated. An S-shaped kink was observed in the current-voltage curves with the increase in (pbi) 2Ir(acac) thickness. Two ways of using different hole transport layers to reduce interfacial energy step and doping to improve charge carrier mobility were used to investigate the origin of the kink. The results showed that this anomalous feature is due to the presence of large interfacial energy step between the anode/donor-interface and the low hole mobility of (pbi) 2Ir(acac). An improved power conversion efficiency of 2.23% under AM 1.5 solar illumination at an intensity of 100 mW/cm 2 was obtained using N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl-4, 4′-diamine to minimize the energy barrier for charge injection. © 2012 American Chemical Society.

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U2 - 10.1021/jp210245a

DO - 10.1021/jp210245a

M3 - RGC 21 - Publication in refereed journal

SN - 1932-7447

VL - 116

SP - 5887

EP - 5891

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 9

ER -