High-performance inverted solar cells with a controlled ZnO buffer layer

Research output: Contribution to journalArticle

  • 9 Citations

Abstract

ZnO is a versatile cathode buffer layer for organic photovoltaics (OPV) due to its appealing optical and electronic properties. Using the sol-gel method, we find that the processing temperature of ZnO cathode buffer layers significantly influences the device performance of inverted polymer OPVs composed of blended films of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). In particular, ZnO processed at relatively low temperatures results in better device performance than those processed at higher temperatures despite the improved crystallinity and electron mobility of the latter. We attribute this finding to the tuning of the ZnO work function with the annealing temperature, which determines the interface energetics at the cathode and thus influences the open circuit voltage, series resistance and fill factor.

LanguageEnglish (US)
Pages3604-3610
Number of pages7
JournalRSC Advances
Volume4
Issue number7
DOIs
StatePublished - 2014

Profile

Buffer layers
Solar cells
Cathodes
Temperature
Butyric acid
Electron mobility
Open circuit voltage
Electronic properties
Sol-gel process
Esters
Polymers
Optical properties
Tuning
Annealing
Processing

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

High-performance inverted solar cells with a controlled ZnO buffer layer. / Jiang, C.; Lunt, R. R.; Duxbury, P. M.; Zhang, P. P.

In: RSC Advances, Vol. 4, No. 7, 2014, p. 3604-3610.

Research output: Contribution to journalArticle

@article{f2fbce55c07941db8ef2e6f6f4ba70f9,
title = "High-performance inverted solar cells with a controlled ZnO buffer layer",
abstract = "ZnO is a versatile cathode buffer layer for organic photovoltaics (OPV) due to its appealing optical and electronic properties. Using the sol-gel method, we find that the processing temperature of ZnO cathode buffer layers significantly influences the device performance of inverted polymer OPVs composed of blended films of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). In particular, ZnO processed at relatively low temperatures results in better device performance than those processed at higher temperatures despite the improved crystallinity and electron mobility of the latter. We attribute this finding to the tuning of the ZnO work function with the annealing temperature, which determines the interface energetics at the cathode and thus influences the open circuit voltage, series resistance and fill factor.",
author = "C. Jiang and Lunt, {R. R.} and Duxbury, {P. M.} and Zhang, {P. P.}",
year = "2014",
doi = "10.1039/c3ra46253f",
language = "English (US)",
volume = "4",
pages = "3604--3610",
journal = "RSC Advances",
issn = "2046-2069",
publisher = "Royal Society of Chemistry",
number = "7",

}

TY - JOUR

T1 - High-performance inverted solar cells with a controlled ZnO buffer layer

AU - Jiang,C.

AU - Lunt,R. R.

AU - Duxbury,P. M.

AU - Zhang,P. P.

PY - 2014

Y1 - 2014

N2 - ZnO is a versatile cathode buffer layer for organic photovoltaics (OPV) due to its appealing optical and electronic properties. Using the sol-gel method, we find that the processing temperature of ZnO cathode buffer layers significantly influences the device performance of inverted polymer OPVs composed of blended films of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). In particular, ZnO processed at relatively low temperatures results in better device performance than those processed at higher temperatures despite the improved crystallinity and electron mobility of the latter. We attribute this finding to the tuning of the ZnO work function with the annealing temperature, which determines the interface energetics at the cathode and thus influences the open circuit voltage, series resistance and fill factor.

AB - ZnO is a versatile cathode buffer layer for organic photovoltaics (OPV) due to its appealing optical and electronic properties. Using the sol-gel method, we find that the processing temperature of ZnO cathode buffer layers significantly influences the device performance of inverted polymer OPVs composed of blended films of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). In particular, ZnO processed at relatively low temperatures results in better device performance than those processed at higher temperatures despite the improved crystallinity and electron mobility of the latter. We attribute this finding to the tuning of the ZnO work function with the annealing temperature, which determines the interface energetics at the cathode and thus influences the open circuit voltage, series resistance and fill factor.

UR - http://www.scopus.com/inward/record.url?scp=84890731904&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84890731904&partnerID=8YFLogxK

U2 - 10.1039/c3ra46253f

DO - 10.1039/c3ra46253f

M3 - Article

VL - 4

SP - 3604

EP - 3610

JO - RSC Advances

T2 - RSC Advances

JF - RSC Advances

SN - 2046-2069

IS - 7

ER -