Imprinting of nanoporosity in lithium-doped nickel oxide through the use of sacrificial zinc oxide nanotemplates

Vinod E. Sandana, David J. Rogers, Ferechteh H. Teherani, Philippe Bove, Ryan McClintock, Manijeh Razeghi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Methods for simultaneously increasing the conductivity and the porosity of NiO layers grown by pulsed laser deposition (PLD) were investigated in order to develop improved photocathodes for p-DSSC applications. NiO:Li (20at%) layers grown on c-Al2O3 by PLD showed a sharp drop in conductivity with increasing substrate temperature. Layers grown at room temperature were more than two orders of magnitude more conductive than undoped NiO layers but did not show evidence of any porosity in Scanning Electron Microscope (SEM) images. A new method for imposing a nanoporosity in NiO was developed based on a sacrificial template of nanostructured ZnO. SEM images and EDX spectroscopy showed that a nanoporous morphology had been imprinted in the NiO overlayer after preferential chemical etching away of the nanostructured ZnO underlayer. Beyond p-DSSC applications, this new process could represent a new paradigm for imprinting porosity in a whole range of materials.

Original languageEnglish (US)
Title of host publicationOxide-Based Materials and Devices VIII 2017
EditorsFerechteh H. Teherani, David C. Look, David J. Rogers, Ivan Bozovic
PublisherSPIE
ISBN (Electronic)9781510606517
DOIs
StatePublished - 2017
EventOxide-Based Materials and Devices VIII 2017 - San Francisco, United States
Duration: Jan 29 2017Feb 1 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10105
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherOxide-Based Materials and Devices VIII 2017
CountryUnited States
CitySan Francisco
Period1/29/172/1/17

Keywords

  • Imprint
  • NiO:Li
  • P-DSSC
  • Pulsed laser deposition
  • Sacrificial nanostructured ZnO

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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