Förster resonance energy transfer in p-DTS(FBTTh2)2- p-SIDT(FBTTh2)2 small molecule ternary blend bulk-heterojunction solar cells for enhanced power conversion efficiency

Ram Datt; Ramakant Sharma; Swati Bishnoi; Vinay Gupta

doi:10.1016/j.matlet.2019.05.043

Förster resonance energy transfer in p-DTS(FBTTh₂)₂- p-SIDT(FBTTh₂)₂ small molecule ternary blend bulk-heterojunction solar cells for enhanced power conversion efficiency

Ram Datt, Ramakant Sharma, Swati Bishnoi, Vinay Gupta

Physics

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

8 Scopus citations

Abstract

In this study, we demonstrate a new all small molecule ternary bulk heterojunction (BHJ) organic solar cells (OSCs) incorporating two small molecule (SM) (7,7′-[4,4-Bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b′]dithiophene-2,6-diyl]bis[6-fluoro-4-(5′-hexyl-[2,2′-bithiophen]-5yl)benzo [c][1,2,5] thiadiazole] (p-DTS(FBTTh₂)₂) and benzo [1,2-b:4,5-b]bis (4,4′-dihexyl-4H-silolo[3,2-b]thiophene-2,2′-diyl)bis(6-fluoro-4-(5′-hexyl-[2,2′-bithiophene]-5-yl)benzo[c][1,2,5] thiadiazole (p-SIDT(FBTTh₂)₂) as a donor and fullerene derivative ([6,6]-Phenyl-C₇₁-butyric acid methyl ester (PC₇₁BM)) as an acceptor. By varying SM donor ratios, we observed an enhancement of power conversion efficiency (PCE) from ∼7% to ∼9%. This increase in the PCE can be attributed to the Förster resonance energy transfer (FRET) as confirmed by steady-state photoluminescence measurements.

Original language	British English
Pages (from-to)	122-125
Number of pages	4
Journal	Materials Letters
Volume	251
DOIs	https://doi.org/10.1016/j.matlet.2019.05.043
State	Published - 15 Sep 2019

Keywords

FRET
Power conversion efficiency
Small molecules
Solar cell
Ternary blend

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

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10.1016/j.matlet.2019.05.043

Cite this

@article{574b57cad8a040bb831c51edac3ef8c1,

title = "F{\"o}rster resonance energy transfer in p-DTS(FBTTh2)2- p-SIDT(FBTTh2)2 small molecule ternary blend bulk-heterojunction solar cells for enhanced power conversion efficiency",

abstract = "In this study, we demonstrate a new all small molecule ternary bulk heterojunction (BHJ) organic solar cells (OSCs) incorporating two small molecule (SM) (7,7′-[4,4-Bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b′]dithiophene-2,6-diyl]bis[6-fluoro-4-(5′-hexyl-[2,2′-bithiophen]-5yl)benzo [c][1,2,5] thiadiazole] (p-DTS(FBTTh2)2) and benzo [1,2-b:4,5-b]bis (4,4′-dihexyl-4H-silolo[3,2-b]thiophene-2,2′-diyl)bis(6-fluoro-4-(5′-hexyl-[2,2′-bithiophene]-5-yl)benzo[c][1,2,5] thiadiazole (p-SIDT(FBTTh2)2) as a donor and fullerene derivative ([6,6]-Phenyl-C71-butyric acid methyl ester (PC71BM)) as an acceptor. By varying SM donor ratios, we observed an enhancement of power conversion efficiency (PCE) from ∼7% to ∼9%. This increase in the PCE can be attributed to the F{\"o}rster resonance energy transfer (FRET) as confirmed by steady-state photoluminescence measurements.",

keywords = "FRET, Power conversion efficiency, Small molecules, Solar cell, Ternary blend",

author = "Ram Datt and Ramakant Sharma and Swati Bishnoi and Vinay Gupta",

note = "Funding Information: The RD and SB would like to acknowledge the financial support from UGC-SRF and CSIR-RA ( 31/1(0494)/2018-EMR-I ), respectively. Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = sep,

day = "15",

doi = "10.1016/j.matlet.2019.05.043",

language = "British English",

volume = "251",

pages = "122--125",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Förster resonance energy transfer in p-DTS(FBTTh2)2- p-SIDT(FBTTh2)2 small molecule ternary blend bulk-heterojunction solar cells for enhanced power conversion efficiency

AU - Datt, Ram

AU - Sharma, Ramakant

AU - Bishnoi, Swati

AU - Gupta, Vinay

PY - 2019/9/15

Y1 - 2019/9/15

N2 - In this study, we demonstrate a new all small molecule ternary bulk heterojunction (BHJ) organic solar cells (OSCs) incorporating two small molecule (SM) (7,7′-[4,4-Bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b′]dithiophene-2,6-diyl]bis[6-fluoro-4-(5′-hexyl-[2,2′-bithiophen]-5yl)benzo [c][1,2,5] thiadiazole] (p-DTS(FBTTh2)2) and benzo [1,2-b:4,5-b]bis (4,4′-dihexyl-4H-silolo[3,2-b]thiophene-2,2′-diyl)bis(6-fluoro-4-(5′-hexyl-[2,2′-bithiophene]-5-yl)benzo[c][1,2,5] thiadiazole (p-SIDT(FBTTh2)2) as a donor and fullerene derivative ([6,6]-Phenyl-C71-butyric acid methyl ester (PC71BM)) as an acceptor. By varying SM donor ratios, we observed an enhancement of power conversion efficiency (PCE) from ∼7% to ∼9%. This increase in the PCE can be attributed to the Förster resonance energy transfer (FRET) as confirmed by steady-state photoluminescence measurements.

AB - In this study, we demonstrate a new all small molecule ternary bulk heterojunction (BHJ) organic solar cells (OSCs) incorporating two small molecule (SM) (7,7′-[4,4-Bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b′]dithiophene-2,6-diyl]bis[6-fluoro-4-(5′-hexyl-[2,2′-bithiophen]-5yl)benzo [c][1,2,5] thiadiazole] (p-DTS(FBTTh2)2) and benzo [1,2-b:4,5-b]bis (4,4′-dihexyl-4H-silolo[3,2-b]thiophene-2,2′-diyl)bis(6-fluoro-4-(5′-hexyl-[2,2′-bithiophene]-5-yl)benzo[c][1,2,5] thiadiazole (p-SIDT(FBTTh2)2) as a donor and fullerene derivative ([6,6]-Phenyl-C71-butyric acid methyl ester (PC71BM)) as an acceptor. By varying SM donor ratios, we observed an enhancement of power conversion efficiency (PCE) from ∼7% to ∼9%. This increase in the PCE can be attributed to the Förster resonance energy transfer (FRET) as confirmed by steady-state photoluminescence measurements.

KW - FRET

KW - Power conversion efficiency

KW - Small molecules

KW - Solar cell

KW - Ternary blend

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U2 - 10.1016/j.matlet.2019.05.043

DO - 10.1016/j.matlet.2019.05.043

M3 - Article

AN - SCOPUS:85065714001

SN - 0167-577X

VL - 251

SP - 122

EP - 125

JO - Materials Letters

JF - Materials Letters

ER -