A General Method : Designing a Hypocrystalline Hydroxide Intermediate to Achieve Ultrasmall and Well-Dispersed Ternary Metal Oxide for Efficient Photovoltaic Devices

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

4 Scopus Citations
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Author(s)

  • Zhanfeng Huang
  • Dan Ouyang
  • Ruiman Ma
  • Wallace C. H. Choy

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number1904684
Journal / PublicationAdvanced Functional Materials
Volume29
Issue number45
Online published30 Aug 2019
Publication statusPublished - 7 Nov 2019

Abstract

Solution-process fine metal-oxide nanoparticles are promising carrier transport layer candidates for unlocking the full potential of solution process in solar cells, due to their low cost, good stability, and favorable electrical/optical properties. However, exotic organic ligands adopted for achieving small size and monodispersion can mostly cause poor conductivity, which thus impedes their electrical application. In this work, a concept of constructing a hypocrystalline intermediate is proposed to develop a general method for synthesizing various ternary metal oxide (TMO) nanoparticles with a sub-ten-nanometer size and good dispersibility without exotic ligands. Particularly, a guideline is summarized based on the understandings about the impact of metal ion intercalation as well as water and anion coordination on the hypocrystalline intermediate. A general method based on the proposed concept is developed to successfully synthesize various sub-ten-nanometer TMO nanoparticles with excellent ability for forming high-quality (smooth and well-coverage) films. As an application example, the high-quality films are used as hole transport layers for achieving high-performance (stability and efficiency) organic/perovskite solar cells. Consequently, this work will contribute to the development of TMO for large-scale and high-performance optoelectronic devices and the concept of tailoring intermediate can leverage the fundamental understandings of synthesis strategies for other metal oxides.

Research Area(s)

  • general method, hypocrystalline intermediate, organic solar cells, perovskite solar cells, ternary metal oxide nanoparticles

Citation Format(s)

A General Method : Designing a Hypocrystalline Hydroxide Intermediate to Achieve Ultrasmall and Well-Dispersed Ternary Metal Oxide for Efficient Photovoltaic Devices. / Huang, Zhanfeng; Ouyang, Dan; Ma, Ruiman; Wu, Wei; Roy, Vellaisamy A. L.; Choy, Wallace C. H.

In: Advanced Functional Materials, Vol. 29, No. 45, 1904684, 07.11.2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal