Ternary small molecule solar cells exhibiting power conversion efficiency of 10.3%

Miao Zhang; Jian Wang; Fujun Zhang; Yang Mi; Qiaoshi An; Wenbin Wang; Xiaoling Ma; Jian Zhang; Xinfeng Liu

doi:10.1016/j.nanoen.2017.07.044

Ternary small molecule solar cells exhibiting power conversion efficiency of 10.3%

Miao Zhang, Jian Wang, Fujun Zhang^*, Yang Mi, Qiaoshi An, Wenbin Wang, Xiaoling Ma, Jian Zhang, Xinfeng Liu

^*Corresponding author for this work

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

85 Citations (Scopus)

Abstract

The elaborately prepared BTR:PC₇₁BM based small molecule solar cells (SMSCs) exhibit a champion power conversion efficiency (PCE) of 9.37%, which should be among the highest values for previous reports on BTR:PC₇₁BM based SMSCs. Based on the optimized binary SMSCs, small molecule DIB-SQ was selected as the third component to fabricate ternary SMSCs. The champion PCE of 10.3% was achieved for ternary SMSCs with 6 wt% DIB-SQ in donors. An approximate 10% PCE improvement was obtained due to obviously increased short current density (J_SC) of 15.44 mA/cm² and fill factor (FF) of 73.8%. The main contribution of DIB-SQ can be summarized as the enhanced photon harvesting in long wavelength range and the optimized phase separation for better exciton dissociation and charge transport in ternary active layer. The results further demonstrate that ternary strategy should be an efficient and versatile method to improve the performance of SMSCs.

Original language	English
Pages (from-to)	571-581
Number of pages	11
Journal	Nano Energy
Volume	39
DOIs	https://doi.org/10.1016/j.nanoen.2017.07.044
Publication status	Published - Sept 2017
Externally published	Yes

Keywords

Energy transfer
Liquid crystalline material
Ternary small molecule solar cells

UN SDGs

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

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10.1016/j.nanoen.2017.07.044

Cite this

@article{95c24e9370f8498da6074f1ae7770250,

title = "Ternary small molecule solar cells exhibiting power conversion efficiency of 10.3%",

abstract = "The elaborately prepared BTR:PC71BM based small molecule solar cells (SMSCs) exhibit a champion power conversion efficiency (PCE) of 9.37%, which should be among the highest values for previous reports on BTR:PC71BM based SMSCs. Based on the optimized binary SMSCs, small molecule DIB-SQ was selected as the third component to fabricate ternary SMSCs. The champion PCE of 10.3% was achieved for ternary SMSCs with 6 wt% DIB-SQ in donors. An approximate 10% PCE improvement was obtained due to obviously increased short current density (JSC) of 15.44 mA/cm2 and fill factor (FF) of 73.8%. The main contribution of DIB-SQ can be summarized as the enhanced photon harvesting in long wavelength range and the optimized phase separation for better exciton dissociation and charge transport in ternary active layer. The results further demonstrate that ternary strategy should be an efficient and versatile method to improve the performance of SMSCs.",

keywords = "Energy transfer, Liquid crystalline material, Ternary small molecule solar cells",

author = "Miao Zhang and Jian Wang and Fujun Zhang and Yang Mi and Qiaoshi An and Wenbin Wang and Xiaoling Ma and Jian Zhang and Xinfeng Liu",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = sep,

doi = "10.1016/j.nanoen.2017.07.044",

language = "English",

volume = "39",

pages = "571--581",

journal = "Nano Energy",

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TY - JOUR

T1 - Ternary small molecule solar cells exhibiting power conversion efficiency of 10.3%

AU - Zhang, Miao

AU - Wang, Jian

AU - Zhang, Fujun

AU - Mi, Yang

AU - An, Qiaoshi

AU - Wang, Wenbin

AU - Ma, Xiaoling

AU - Zhang, Jian

AU - Liu, Xinfeng

PY - 2017/9

Y1 - 2017/9

N2 - The elaborately prepared BTR:PC71BM based small molecule solar cells (SMSCs) exhibit a champion power conversion efficiency (PCE) of 9.37%, which should be among the highest values for previous reports on BTR:PC71BM based SMSCs. Based on the optimized binary SMSCs, small molecule DIB-SQ was selected as the third component to fabricate ternary SMSCs. The champion PCE of 10.3% was achieved for ternary SMSCs with 6 wt% DIB-SQ in donors. An approximate 10% PCE improvement was obtained due to obviously increased short current density (JSC) of 15.44 mA/cm2 and fill factor (FF) of 73.8%. The main contribution of DIB-SQ can be summarized as the enhanced photon harvesting in long wavelength range and the optimized phase separation for better exciton dissociation and charge transport in ternary active layer. The results further demonstrate that ternary strategy should be an efficient and versatile method to improve the performance of SMSCs.

AB - The elaborately prepared BTR:PC71BM based small molecule solar cells (SMSCs) exhibit a champion power conversion efficiency (PCE) of 9.37%, which should be among the highest values for previous reports on BTR:PC71BM based SMSCs. Based on the optimized binary SMSCs, small molecule DIB-SQ was selected as the third component to fabricate ternary SMSCs. The champion PCE of 10.3% was achieved for ternary SMSCs with 6 wt% DIB-SQ in donors. An approximate 10% PCE improvement was obtained due to obviously increased short current density (JSC) of 15.44 mA/cm2 and fill factor (FF) of 73.8%. The main contribution of DIB-SQ can be summarized as the enhanced photon harvesting in long wavelength range and the optimized phase separation for better exciton dissociation and charge transport in ternary active layer. The results further demonstrate that ternary strategy should be an efficient and versatile method to improve the performance of SMSCs.

KW - Energy transfer

KW - Liquid crystalline material

KW - Ternary small molecule solar cells

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U2 - 10.1016/j.nanoen.2017.07.044

DO - 10.1016/j.nanoen.2017.07.044

M3 - Article

AN - SCOPUS:85026372186

SN - 2211-2855

VL - 39

SP - 571

EP - 581

JO - Nano Energy

JF - Nano Energy

ER -

Ternary small molecule solar cells exhibiting power conversion efficiency of 10.3%

Abstract

Keywords

UN SDGs

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