14.7% Efficiency Organic Photovoltaic Cells Enabled by Active Materials with a Large Electrostatic Potential Difference

Huifeng Yao; Yong Cui; Deping Qian; Carlito S. Ponseca; Alireza Honarfar; Ye Xu; Jingming Xin; Zhenyu Chen; Ling Hong; Bowei Gao; Runnan Yu; Yunfei Zu; Wei Ma; Pavel Chabera; Tönu Pullerits; Arkady Yartsev; Feng Gao; Jianhui Hou

doi:10.1021/jacs.8b12937

14.7% Efficiency Organic Photovoltaic Cells Enabled by Active Materials with a Large Electrostatic Potential Difference

Huifeng Yao, Yong Cui, Deping Qian, Carlito S. Ponseca, Alireza Honarfar, Ye Xu, Jingming Xin, Zhenyu Chen, Ling Hong, Bowei Gao, Runnan Yu, Yunfei Zu, Wei Ma, Pavel Chabera, Tönu Pullerits, Arkady Yartsev, Feng Gao, Jianhui Hou

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

Abstract

Although significant improvements have been achieved for organic photovoltaic cells (OPVs), the top-performing devices still show power conversion efficiencies far behind those of commercialized solar cells. One of the main reasons is the large driving force required for separating electron-hole pairs. Here, we demonstrate an efficiency of 14.7% in the single-junction OPV by using a new polymer donor PTO2 and a nonfullerene acceptor IT-4F. The device possesses an efficient charge generation at a low driving force. Ultrafast transient absorption measurements probe the formation of loosely bound charge pairs with extended lifetime that impedes the recombination of charge carriers in the blend. The theoretical studies reveal that the molecular electrostatic potential (ESP) between PTO2 and IT-4F is large, and the induced intermolecular electric field may assist the charge generation. The results suggest OPVs have the potential for further improvement by judicious modulation of ESP.

Original language	English
Pages (from-to)	7743-7750
Number of pages	8
Journal	Journal of the American Chemical Society
Volume	141
Issue number	19
DOIs	https://doi.org/10.1021/jacs.8b12937
Publication status	Published - 2019

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Subject classification (UKÄ)

Physical Chemistry (including Surface- and Colloid Chemistry)
Energy Engineering
Condensed Matter Physics (including Material Physics, Nano Physics)

Access to Document

10.1021/jacs.8b12937

Cite this

Yao, H., Cui, Y., Qian, D., Ponseca, C. S., Honarfar, A., Xu, Y., Xin, J., Chen, Z., Hong, L., Gao, B., Yu, R., Zu, Y., Ma, W., Chabera, P., Pullerits, T., Yartsev, A., Gao, F., & Hou, J. (2019). 14.7% Efficiency Organic Photovoltaic Cells Enabled by Active Materials with a Large Electrostatic Potential Difference. Journal of the American Chemical Society, 141(19), 7743-7750. https://doi.org/10.1021/jacs.8b12937

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title = "14.7\% Efficiency Organic Photovoltaic Cells Enabled by Active Materials with a Large Electrostatic Potential Difference",

abstract = "Although significant improvements have been achieved for organic photovoltaic cells (OPVs), the top-performing devices still show power conversion efficiencies far behind those of commercialized solar cells. One of the main reasons is the large driving force required for separating electron-hole pairs. Here, we demonstrate an efficiency of 14.7\% in the single-junction OPV by using a new polymer donor PTO2 and a nonfullerene acceptor IT-4F. The device possesses an efficient charge generation at a low driving force. Ultrafast transient absorption measurements probe the formation of loosely bound charge pairs with extended lifetime that impedes the recombination of charge carriers in the blend. The theoretical studies reveal that the molecular electrostatic potential (ESP) between PTO2 and IT-4F is large, and the induced intermolecular electric field may assist the charge generation. The results suggest OPVs have the potential for further improvement by judicious modulation of ESP.",

author = "Huifeng Yao and Yong Cui and Deping Qian and Ponseca, \{Carlito S.\} and Alireza Honarfar and Ye Xu and Jingming Xin and Zhenyu Chen and Ling Hong and Bowei Gao and Runnan Yu and Yunfei Zu and Wei Ma and Pavel Chabera and T{\"o}nu Pullerits and Arkady Yartsev and Feng Gao and Jianhui Hou",

year = "2019",

doi = "10.1021/jacs.8b12937",

language = "English",

volume = "141",

pages = "7743--7750",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "The American Chemical Society (ACS)",

number = "19",

}

Yao, H, Cui, Y, Qian, D, Ponseca, CS, Honarfar, A, Xu, Y, Xin, J, Chen, Z, Hong, L, Gao, B, Yu, R, Zu, Y, Ma, W, Chabera, P, Pullerits, T , Yartsev, A, Gao, F & Hou, J 2019, '14.7% Efficiency Organic Photovoltaic Cells Enabled by Active Materials with a Large Electrostatic Potential Difference', Journal of the American Chemical Society, vol. 141, no. 19, pp. 7743-7750. https://doi.org/10.1021/jacs.8b12937

TY - JOUR

T1 - 14.7% Efficiency Organic Photovoltaic Cells Enabled by Active Materials with a Large Electrostatic Potential Difference

AU - Yao, Huifeng

AU - Cui, Yong

AU - Qian, Deping

AU - Ponseca, Carlito S.

AU - Honarfar, Alireza

AU - Xu, Ye

AU - Xin, Jingming

AU - Chen, Zhenyu

AU - Hong, Ling

AU - Gao, Bowei

AU - Yu, Runnan

AU - Zu, Yunfei

AU - Ma, Wei

AU - Chabera, Pavel

AU - Pullerits, Tönu

AU - Yartsev, Arkady

AU - Gao, Feng

AU - Hou, Jianhui

PY - 2019

Y1 - 2019

N2 - Although significant improvements have been achieved for organic photovoltaic cells (OPVs), the top-performing devices still show power conversion efficiencies far behind those of commercialized solar cells. One of the main reasons is the large driving force required for separating electron-hole pairs. Here, we demonstrate an efficiency of 14.7% in the single-junction OPV by using a new polymer donor PTO2 and a nonfullerene acceptor IT-4F. The device possesses an efficient charge generation at a low driving force. Ultrafast transient absorption measurements probe the formation of loosely bound charge pairs with extended lifetime that impedes the recombination of charge carriers in the blend. The theoretical studies reveal that the molecular electrostatic potential (ESP) between PTO2 and IT-4F is large, and the induced intermolecular electric field may assist the charge generation. The results suggest OPVs have the potential for further improvement by judicious modulation of ESP.

AB - Although significant improvements have been achieved for organic photovoltaic cells (OPVs), the top-performing devices still show power conversion efficiencies far behind those of commercialized solar cells. One of the main reasons is the large driving force required for separating electron-hole pairs. Here, we demonstrate an efficiency of 14.7% in the single-junction OPV by using a new polymer donor PTO2 and a nonfullerene acceptor IT-4F. The device possesses an efficient charge generation at a low driving force. Ultrafast transient absorption measurements probe the formation of loosely bound charge pairs with extended lifetime that impedes the recombination of charge carriers in the blend. The theoretical studies reveal that the molecular electrostatic potential (ESP) between PTO2 and IT-4F is large, and the induced intermolecular electric field may assist the charge generation. The results suggest OPVs have the potential for further improvement by judicious modulation of ESP.

UR - https://www.scopus.com/pages/publications/85065791685

U2 - 10.1021/jacs.8b12937

DO - 10.1021/jacs.8b12937

M3 - Article

C2 - 31017418

AN - SCOPUS:85065791685

SN - 0002-7863

VL - 141

SP - 7743

EP - 7750

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 19

ER -

14.7% Efficiency Organic Photovoltaic Cells Enabled by Active Materials with a Large Electrostatic Potential Difference

Abstract

UN SDGs

Subject classification (UKÄ)

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Other files and links

Fingerprint

Charge Carrier Dynamics in Novel Solar Materials: Ultrafast Spectroelectrochemistry

Lund Nano Lab - part of national infrastructure Myfab

Cite this

14.7% Efficiency Organic Photovoltaic Cells Enabled by Active Materials with a Large Electrostatic Potential Difference

Abstract

UN SDGs

Subject classification (UKÄ)

Access to Document

Other files and links

Fingerprint

Research output

Charge Carrier Dynamics in Novel Solar Materials: Ultrafast Spectroelectrochemistry

Equipment

Lund Nano Lab - part of national infrastructure Myfab

Cite this