View : 25 Download: 0

High performance inverted polymer solar cells using ultrathin atomic layer deposited TiO2 films

Title
High performance inverted polymer solar cells using ultrathin atomic layer deposited TiO2 films
Authors
Cho, Hyun-SooShin, NaraKim, KyungkonKim, BongSooKim, Do-Heyoung
Ewha Authors
김경곤김봉수
SCOPUS Author ID
김경곤scopus; 김봉수scopus
Issue Date
2015
Journal Title
SYNTHETIC METALS
ISSN
0379-6779JCR Link
Citation
vol. 207, pp. 31 - 34
Keywords
Inverted photovoltaic devicesAtomic layer depositionPower conversion efficiencyElectron extraction layerTitanium nanoparticles
Publisher
ELSEVIER SCIENCE SA
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Photovoltaic properties of inverted type polymer solar cells (PSCs) using ultrathin TiO2 layers as an adjuvant electron collecting layer were investigated. To prepare the ultrathin (2.5 nm) TiO2 layers on top of TiO2 nanoparticles, atomic layer deposition (ALD) process was conducted at 125, 175, and 200 degrees C. The addition of ALD TiO2 on nanoparticulated TiO2 effectively enhanced the photovoltaic performances of inverted organic solar cells. The inverted PSC device with the thin 200 degrees C-ALD TiO2 layers showed the highest power conversion efficiency of 3.50%, which is an enhancement of approximately 30% compared to the cells without the ALD TiO2 layer (PCE = 2.72%). This work demonstrates that the ALD process plays a critical role in the enhancement of electron extraction efficiency with treating the surface defects of the TiO2 nanoparticles. (C) 2015 Elsevier B.V. All rights reserved.
DOI
10.1016/j.synthmet.2015.06.001
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE