BROWSE

Related Scientist

Researcher

나노입자 연구단
나노입자 연구단
more info

Highly uniform and vertically aligned SnO2 nanochannel arrays for photovoltaic applications

Cited 14 time in webofscience Cited 0 time in scopus
215 Viewed 4 Downloaded
Title
Highly uniform and vertically aligned SnO2 nanochannel arrays for photovoltaic applications
Author(s)
Kim J.-Y.; Jin Soo Kang; Shin J.; Jin Kim; Han S.-J.; Park J.; Min Y.-S.; Ko M.J.; Yung-Eun Sung
Publication Date
2015-05
Journal
NANOSCALE, v.7, no.18, pp.8368 - 8377
Publisher
ROYAL SOC CHEMISTRY
Abstract
Nanostructured electrodes with vertical alignment have been considered ideal structures for electron transport and interfacial contact with redox electrolytes in photovoltaic devices. Here, we report large-scale vertically aligned SnO2 nanochannel arrays with uniform structures, without lateral cracks fabricated by a modified anodic oxidation process. In the modified process, ultrasonication is utilized to avoid formation of partial compact layers and lateral cracks in the SnO2 nanochannel arrays. Building on this breakthrough, we first demonstrate the photovoltaic application of these vertically aligned SnO2 nanochannel arrays. These vertically aligned arrays were directly and successfully applied in quasi-solid state dye-sensitized solar cells (DSSCs) as photoanodes, yielding reasonable conversion efficiency under back-side illumination. In addition, a significantly short process time (330 s) for achieving the optimal thickness (7.0 μm) and direct utilization of the anodized electrodes enable a simple, rapid and low-cost fabrication process. Furthermore, a TiO2 shell layer was coated on the SnO2 nanochannel arrays by the atomic layer deposition (ALD) process for enhancement of dye-loading and prolonging the electron lifetime in the DSSC. Owing to the presence of the ALD TiO2 layer, the short-circuit photocurrent density (Jsc) and conversion efficiency were increased by 20% and 19%, respectively, compared to those of the DSSC without the ALD TiO2 layer. This study provides valuable insight into the development of efficient SnO2-based photoanodes for photovoltaic application by a simple and rapid fabrication process. This journal is © The Royal Society of Chemistry
URI
https://pr.ibs.re.kr/handle/8788114/2021
ISSN
2040-3364
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
33.Nanoscale_201505.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

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

Browse