Performance enhancement of conjugated polymer-small molecule-non fullerene ternary organic solar cells by tuning recombination kinetics and molecular ordering

Ramakant Sharma; Hyunwoo Lee; Martin Seifrid; Vinay Gupta; Guillermo C. Bazan; Seunghyup Yoo

doi:10.1016/j.solener.2020.03.008

Performance enhancement of conjugated polymer-small molecule-non fullerene ternary organic solar cells by tuning recombination kinetics and molecular ordering

Ramakant Sharma, Hyunwoo Lee, Martin Seifrid, Vinay Gupta, Guillermo C. Bazan, Seunghyup Yoo

Physics

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

23 Scopus citations

Abstract

We present our study of conjugated polymer-small molecule (SM)-non-fullerene ternary organic solar cells (OSCs), which employs conjugated polymer PTB7-Th and small molecule p-DTS(FBTTh₂)₂ as donors and non-fullerene molecule IEICO-4F as an acceptor. It is observed that the power conversion efficiency (PCE) of ∼10.9% for PTB7-Th: p-DTS(FBTTh₂)₂: IEICO-4F ternary OSCs with 15 wt% of p-DTS(FBTTh₂)₂ SM is higher than PCE of ∼9.8% for PTB7-Th: IEICO-4F OSCs. Morphological studies confirm that the addition of p-DTS(FBTTh₂)₂ SM in PTB7-Th: IEICO-4F binary blend improves molecular ordering and crystallinity of PTB7-Th due to the favorable interaction with p-DTS(FBTTh₂)₂ thereby providing 3-D textured structures consisting of a mixture of edge-on and face-on orientations. The improved molecular ordering is shown to enhance exciton generation rate, exciton dissociation, charge collection, and to reduce charge recombination, all of which boosts the PCE.

Original language	British English
Pages (from-to)	499-507
Number of pages	9
Journal	Solar Energy
Volume	201
DOIs	https://doi.org/10.1016/j.solener.2020.03.008
State	Published - 1 May 2020

Keywords

GIWAXS
IEICO-4F
Non-fullerene
p-DTS(FBTTh)
PTB7-Th
Ternary

UN SDGs

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

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10.1016/j.solener.2020.03.008

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@article{27b9e90cca3a4b4f9a4308fd9751703e,

title = "Performance enhancement of conjugated polymer-small molecule-non fullerene ternary organic solar cells by tuning recombination kinetics and molecular ordering",

abstract = "We present our study of conjugated polymer-small molecule (SM)-non-fullerene ternary organic solar cells (OSCs), which employs conjugated polymer PTB7-Th and small molecule p-DTS(FBTTh2)2 as donors and non-fullerene molecule IEICO-4F as an acceptor. It is observed that the power conversion efficiency (PCE) of ∼10.9% for PTB7-Th: p-DTS(FBTTh2)2: IEICO-4F ternary OSCs with 15 wt% of p-DTS(FBTTh2)2 SM is higher than PCE of ∼9.8% for PTB7-Th: IEICO-4F OSCs. Morphological studies confirm that the addition of p-DTS(FBTTh2)2 SM in PTB7-Th: IEICO-4F binary blend improves molecular ordering and crystallinity of PTB7-Th due to the favorable interaction with p-DTS(FBTTh2)2 thereby providing 3-D textured structures consisting of a mixture of edge-on and face-on orientations. The improved molecular ordering is shown to enhance exciton generation rate, exciton dissociation, charge collection, and to reduce charge recombination, all of which boosts the PCE.",

keywords = "GIWAXS, IEICO-4F, Non-fullerene, p-DTS(FBTTh), PTB7-Th, Ternary",

author = "Ramakant Sharma and Hyunwoo Lee and Martin Seifrid and Vinay Gupta and Bazan, {Guillermo C.} and Seunghyup Yoo",

note = "Funding Information: This work was supported by the New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea (No. 20163010012200 ). Publisher Copyright: {\textcopyright} 2020 International Solar Energy Society",

year = "2020",

month = may,

day = "1",

doi = "10.1016/j.solener.2020.03.008",

language = "British English",

volume = "201",

pages = "499--507",

journal = "Solar Energy",

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publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Performance enhancement of conjugated polymer-small molecule-non fullerene ternary organic solar cells by tuning recombination kinetics and molecular ordering

AU - Sharma, Ramakant

AU - Lee, Hyunwoo

AU - Seifrid, Martin

AU - Gupta, Vinay

AU - Bazan, Guillermo C.

AU - Yoo, Seunghyup

N1 - Funding Information: This work was supported by the New & Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) granted financial resource from the Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea (No. 20163010012200 ). Publisher Copyright: © 2020 International Solar Energy Society

PY - 2020/5/1

Y1 - 2020/5/1

N2 - We present our study of conjugated polymer-small molecule (SM)-non-fullerene ternary organic solar cells (OSCs), which employs conjugated polymer PTB7-Th and small molecule p-DTS(FBTTh2)2 as donors and non-fullerene molecule IEICO-4F as an acceptor. It is observed that the power conversion efficiency (PCE) of ∼10.9% for PTB7-Th: p-DTS(FBTTh2)2: IEICO-4F ternary OSCs with 15 wt% of p-DTS(FBTTh2)2 SM is higher than PCE of ∼9.8% for PTB7-Th: IEICO-4F OSCs. Morphological studies confirm that the addition of p-DTS(FBTTh2)2 SM in PTB7-Th: IEICO-4F binary blend improves molecular ordering and crystallinity of PTB7-Th due to the favorable interaction with p-DTS(FBTTh2)2 thereby providing 3-D textured structures consisting of a mixture of edge-on and face-on orientations. The improved molecular ordering is shown to enhance exciton generation rate, exciton dissociation, charge collection, and to reduce charge recombination, all of which boosts the PCE.

AB - We present our study of conjugated polymer-small molecule (SM)-non-fullerene ternary organic solar cells (OSCs), which employs conjugated polymer PTB7-Th and small molecule p-DTS(FBTTh2)2 as donors and non-fullerene molecule IEICO-4F as an acceptor. It is observed that the power conversion efficiency (PCE) of ∼10.9% for PTB7-Th: p-DTS(FBTTh2)2: IEICO-4F ternary OSCs with 15 wt% of p-DTS(FBTTh2)2 SM is higher than PCE of ∼9.8% for PTB7-Th: IEICO-4F OSCs. Morphological studies confirm that the addition of p-DTS(FBTTh2)2 SM in PTB7-Th: IEICO-4F binary blend improves molecular ordering and crystallinity of PTB7-Th due to the favorable interaction with p-DTS(FBTTh2)2 thereby providing 3-D textured structures consisting of a mixture of edge-on and face-on orientations. The improved molecular ordering is shown to enhance exciton generation rate, exciton dissociation, charge collection, and to reduce charge recombination, all of which boosts the PCE.

KW - GIWAXS

KW - IEICO-4F

KW - Non-fullerene

KW - p-DTS(FBTTh)

KW - PTB7-Th

KW - Ternary

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DO - 10.1016/j.solener.2020.03.008

M3 - Article

AN - SCOPUS:85081658795

SN - 0038-092X

VL - 201

SP - 499

EP - 507

JO - Solar Energy

JF - Solar Energy

ER -

Performance enhancement of conjugated polymer-small molecule-non fullerene ternary organic solar cells by tuning recombination kinetics and molecular ordering

Abstract

Keywords

UN SDGs

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