Efficient inverted polymer solar cells via pyridine-based organic molecules as interfacial modification layer on sol-gel zinc oxide surface

Ren Xiu Ou, Yen Chia Chen, Chen Hsueh Lin, Tzung-Fang Guo, Ten-Chin Wen

Research output: Contribution to journalArticle

Abstract

Pyridine-based organic molecules (POMs), 4-phenylpyridine (4-Py) and 4-tert-butylpyridine (4-tbp) were used to modify the sol-gel ZnO surface for inverted polymer solar cells (PSCs). X-ray photoelectron spectroscopic (XPS) results showed the formation of N–Zn bonding and the reduction of oxygen vacancies (Vo), depicting that POMs chemisorbed on Vo sites of ZnO surface to passivate O defects. From ultraviolet photoelectron spectroscopic (UPS) data, the work function (WF) of ZnO slightly decreased due to interfacial dipole, enhancing the electron extraction from ZnO surface. ZnO surface modified with POMs (ZnO/POMs) possessed smoother morphology and more hydrophobicity than the pristine ZnO surface, providing good interfacial contact with polymeric active layer. The improved surface properties benefited power conversion efficiency (PCE) of bulk-heterojunction (BHJ) PSCs and their stability. As a result, PSCs with ZnO/4-tbp and ZnO/4-Py achieved 9.29% and 9.07% respectively, while 8.16% with the pristine ZnO. Especially, PSCs with ZnO/4-tbp possessed the best PCE because of its intramolecular dipole from electron donating group. This study demonstrates the benefits of POMs modifying the sol-gol ZnO surface for inverted PSCs.

Original languageEnglish
Pages (from-to)93-97
Number of pages5
JournalOrganic Electronics
Volume63
DOIs
Publication statusPublished - 2018 Dec 1

Fingerprint

Zinc Oxide
Zinc oxide
zinc oxides
Pyridine
Sol-gels
pyridines
solar cells
gels
Molecules
polymers
molecules
Photoelectrons
Conversion efficiency
photoelectrons
dipoles
Electrons
Polymethyl Methacrylate
Oxygen vacancies
Hydrophobicity
hydrophobicity

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

@article{d6351673f33d4b6abf5d69e121175caf,
title = "Efficient inverted polymer solar cells via pyridine-based organic molecules as interfacial modification layer on sol-gel zinc oxide surface",
abstract = "Pyridine-based organic molecules (POMs), 4-phenylpyridine (4-Py) and 4-tert-butylpyridine (4-tbp) were used to modify the sol-gel ZnO surface for inverted polymer solar cells (PSCs). X-ray photoelectron spectroscopic (XPS) results showed the formation of N–Zn bonding and the reduction of oxygen vacancies (Vo), depicting that POMs chemisorbed on Vo sites of ZnO surface to passivate O defects. From ultraviolet photoelectron spectroscopic (UPS) data, the work function (WF) of ZnO slightly decreased due to interfacial dipole, enhancing the electron extraction from ZnO surface. ZnO surface modified with POMs (ZnO/POMs) possessed smoother morphology and more hydrophobicity than the pristine ZnO surface, providing good interfacial contact with polymeric active layer. The improved surface properties benefited power conversion efficiency (PCE) of bulk-heterojunction (BHJ) PSCs and their stability. As a result, PSCs with ZnO/4-tbp and ZnO/4-Py achieved 9.29{\%} and 9.07{\%} respectively, while 8.16{\%} with the pristine ZnO. Especially, PSCs with ZnO/4-tbp possessed the best PCE because of its intramolecular dipole from electron donating group. This study demonstrates the benefits of POMs modifying the sol-gol ZnO surface for inverted PSCs.",
author = "Ou, {Ren Xiu} and Chen, {Yen Chia} and Lin, {Chen Hsueh} and Tzung-Fang Guo and Ten-Chin Wen",
year = "2018",
month = "12",
day = "1",
doi = "10.1016/j.orgel.2018.09.012",
language = "English",
volume = "63",
pages = "93--97",
journal = "Organic Electronics: physics, materials, applications",
issn = "1566-1199",
publisher = "Elsevier",

}

Efficient inverted polymer solar cells via pyridine-based organic molecules as interfacial modification layer on sol-gel zinc oxide surface. / Ou, Ren Xiu; Chen, Yen Chia; Lin, Chen Hsueh; Guo, Tzung-Fang; Wen, Ten-Chin.

In: Organic Electronics, Vol. 63, 01.12.2018, p. 93-97.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Efficient inverted polymer solar cells via pyridine-based organic molecules as interfacial modification layer on sol-gel zinc oxide surface

AU - Ou, Ren Xiu

AU - Chen, Yen Chia

AU - Lin, Chen Hsueh

AU - Guo, Tzung-Fang

AU - Wen, Ten-Chin

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Pyridine-based organic molecules (POMs), 4-phenylpyridine (4-Py) and 4-tert-butylpyridine (4-tbp) were used to modify the sol-gel ZnO surface for inverted polymer solar cells (PSCs). X-ray photoelectron spectroscopic (XPS) results showed the formation of N–Zn bonding and the reduction of oxygen vacancies (Vo), depicting that POMs chemisorbed on Vo sites of ZnO surface to passivate O defects. From ultraviolet photoelectron spectroscopic (UPS) data, the work function (WF) of ZnO slightly decreased due to interfacial dipole, enhancing the electron extraction from ZnO surface. ZnO surface modified with POMs (ZnO/POMs) possessed smoother morphology and more hydrophobicity than the pristine ZnO surface, providing good interfacial contact with polymeric active layer. The improved surface properties benefited power conversion efficiency (PCE) of bulk-heterojunction (BHJ) PSCs and their stability. As a result, PSCs with ZnO/4-tbp and ZnO/4-Py achieved 9.29% and 9.07% respectively, while 8.16% with the pristine ZnO. Especially, PSCs with ZnO/4-tbp possessed the best PCE because of its intramolecular dipole from electron donating group. This study demonstrates the benefits of POMs modifying the sol-gol ZnO surface for inverted PSCs.

AB - Pyridine-based organic molecules (POMs), 4-phenylpyridine (4-Py) and 4-tert-butylpyridine (4-tbp) were used to modify the sol-gel ZnO surface for inverted polymer solar cells (PSCs). X-ray photoelectron spectroscopic (XPS) results showed the formation of N–Zn bonding and the reduction of oxygen vacancies (Vo), depicting that POMs chemisorbed on Vo sites of ZnO surface to passivate O defects. From ultraviolet photoelectron spectroscopic (UPS) data, the work function (WF) of ZnO slightly decreased due to interfacial dipole, enhancing the electron extraction from ZnO surface. ZnO surface modified with POMs (ZnO/POMs) possessed smoother morphology and more hydrophobicity than the pristine ZnO surface, providing good interfacial contact with polymeric active layer. The improved surface properties benefited power conversion efficiency (PCE) of bulk-heterojunction (BHJ) PSCs and their stability. As a result, PSCs with ZnO/4-tbp and ZnO/4-Py achieved 9.29% and 9.07% respectively, while 8.16% with the pristine ZnO. Especially, PSCs with ZnO/4-tbp possessed the best PCE because of its intramolecular dipole from electron donating group. This study demonstrates the benefits of POMs modifying the sol-gol ZnO surface for inverted PSCs.

UR - http://www.scopus.com/inward/record.url?scp=85053464578&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053464578&partnerID=8YFLogxK

U2 - 10.1016/j.orgel.2018.09.012

DO - 10.1016/j.orgel.2018.09.012

M3 - Article

AN - SCOPUS:85053464578

VL - 63

SP - 93

EP - 97

JO - Organic Electronics: physics, materials, applications

JF - Organic Electronics: physics, materials, applications

SN - 1566-1199

ER -