# Amplifying Photochromic Response in Tungsten Oxide Films with Titanium Oxide and Polyvinylpyrrolidone

https://mdr.nims.go.jp/datasets/2b8ea36b-ceb0-4a9c-8f84-603804bd1c8d

## File

- [nanomaterials-14-01121.pdf](https://mdr.nims.go.jp/filesets/b9c71151-4c61-4e39-91b9-c8f05bbe749d/download) ([Detail](https://mdr.nims.go.jp/filesets/b9c71151-4c61-4e39-91b9-c8f05bbe749d.md))

## Id

2b8ea36b-ceb0-4a9c-8f84-603804bd1c8d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-08-19T23:38:37.453887Z

## Updated at

2024-08-28T23:30:27.864297Z

## Published at

2024-08-28T23:30:27.948614Z

## Doi



## First published url

https://doi.org/10.3390/nano14131121

## Date published

2024-06-29

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Amplifying Photochromic Response in Tungsten Oxide Films with Titanium Oxide
    and Polyvinylpyrrolidone
  title_type: original
  lang: en

## Description

- description: Tungsten oxide (WO3) is known for its photochromic properties, making
    it useful for smart windows, displays, and sensors. However, its small bandgap
    leads to rapid recombination of electron–hole pairs, resulting in poor photochromic
    performance. This study aims to enhance the photochromic properties of WO3 by
    synthesizing hexagonal tungsten oxide via hydrothermal synthesis, which increases
    surface area and internal hydrates. Titanium oxide (TiO2) was adsorbed onto the
    tungsten oxide to inject additional charges and reduce electron–hole recombination.
    Additionally, polyvinylpyrrolidone (PVP) was used to improve dispersion in organic
    solvents, allowing for the fabrication of high-quality films using the doctor
    blade method. Characterization confirmed the enhanced surface area, crystal structure,
    and dispersion stability. Reflectance and transmittance measurements demonstrated
    significant improvements in photochromic properties due to the composite structure.
    These findings suggest that the introduction of TiO2 and PVP to tungsten oxide
    effectively enhances its photochromic performance, broadening its applicability
    in various advanced photochromic applications.
  description_type: abstract
  lang: und

## Creator

- name: Min-Sung Kim
  role: author
- name: Jun-Ho Yoon
  role: author
- name: Hong-Mo Kim
  role: author
- name: Dong-Jun Lee
  role: author
- name: Tamaki Hirose
  role: author
- name: Yoshihiko Takeda
  role: author
  orcid: https://orcid.org/0000-0003-4961-3687
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Jae-Pil Kim
  role: author

## Contact agent



## Publisher

organization: MDPI AG

## Managing organization



## Keyword

- subject: tungsten oxide nanoparticles
  schema: not_defined
- subject: hybrid composite
  schema: not_defined
- subject: dispersibility
  schema: not_defined
- subject: photochromic property
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nanomaterials
  issn: '20794991'
  volume: '14'
  issue: '13'
  article_number: '1121'

## Conference



## Related item



## Funding

- identifier: '20010838'
  funder_name: Ministry of Trade, Industry and Energy

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: b9c71151-4c61-4e39-91b9-c8f05bbe749d
  filename: nanomaterials-14-01121.pdf
  content_type: application/pdf
  size: 4192664
  md5: f8fa5ab3d9bd2fdd3692da3ce33f805e

## Thumbnail

fileset_id: b9c71151-4c61-4e39-91b9-c8f05bbe749d
filename: nanomaterials-14-01121.pdf