# Mechanism of charge accumulation in potassium poly(heptazine imide)

https://mdr.nims.go.jp/datasets/d4e96456-0496-4b53-8ebc-c18be91a54ea

## File

- [d4cp02012j.pdf](https://mdr.nims.go.jp/filesets/f7363c52-5bb5-4aad-a98c-cb6e42a87750/download) ([Detail](https://mdr.nims.go.jp/filesets/f7363c52-5bb5-4aad-a98c-cb6e42a87750.md))

## Id

d4e96456-0496-4b53-8ebc-c18be91a54ea

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-09T11:23:02.806495Z

## Updated at

2024-11-11T07:30:21.961863Z

## Published at

2024-11-11T07:30:22.074346Z

## Doi



## First published url

https://doi.org/10.1039/d4cp02012j

## Date published

2024-07-09

## Recorded date published

2024-7-31

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Mechanism of charge accumulation in potassium poly(heptazine imide)
  title_type: original
  lang: en

## Description

- description: Dark photocatalysis is the ability of a photocatalyst to accumulate
    photocarriers during light irradiation and consume them for redox reactions under
    dark conditions. This phenomenon of photocatalysts storing photocarriers is known
    as charge accumulation. Dark photocatalysts can mitigate fluctuations in photocatalytic
    reaction efficiency in response to fluctuating solar irradiation. Potassium poly(heptazine
    imide) (K-PHI) has attracted considerable attention due to its high photocatalytic
    efficiency and ability to undergo dark photocatalysis. However, the detailed mechanism
    of charge accumulation in K-PHI remains unclear because photochromism, potassium
    ion desorption, and charge accumulation occur simultaneously triggered by light
    irradiation, limiting the comprehensive understanding of this mechanism. To elucidate
    the charge accumulation mechanism in K-PHI, highly oriented K-PHI thin films were
    prepared. Then, their fundamental physical properties and optical response of
    their electrical properties were investigated. We succeeded in separately observing
    photochromism, potassium ion desorption, and charge accumulation induced by light
    irradiation on K-PHI and proposed a comprehensive model to explain these phenomena.
    This study not only provides insights into the unique physical phenomena exhibited
    by K-PHI but also contributes to the development of solar energy–storage materials
    in the future.
  description_type: abstract
  lang: und

## Creator

- name: Goichiro Seo
  role: author
  orcid: https://orcid.org/0000-0003-2912-2848
- name: Ryoma Hayakawa
  role: author
  orcid: https://orcid.org/0000-0002-1442-8230
- name: Yutaka Wakayama
  role: author
  orcid: https://orcid.org/0000-0002-0801-8884
- name: Ryosuke Ohnuki
  role: author
- name: Shinya Yoshioka
  role: author
- name: Kaname Kanai
  role: author
  orcid: https://orcid.org/0000-0002-3952-5491

## Contact agent



## Publisher

organization: Royal Society of Chemistry (RSC)

## Managing organization



## Keyword

- subject: Dark photocatalysts
  schema: not_defined
- subject: Potassium poly(heptazine imide)
  schema: not_defined
- subject: Charge accumulation mechanism
  schema: not_defined
- subject: Light irradiation
  schema: not_defined

## Rights

- identifier: cc-by-3.0

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Chemistry Chemical Physics
  issn: '14639076'
  volume: '26'
  issue: '30'
  start_page: 20585
  end_page: 20597

## Conference



## Related item



## Funding

- identifier: 23KJ1967
  funder_name: Japan Society for the Promotion of Science
- identifier: JPMJSP2151
  funder_name: Japan Science and Technology Agency

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## Fileset

- id: f7363c52-5bb5-4aad-a98c-cb6e42a87750
  filename: d4cp02012j.pdf
  content_type: application/pdf
  size: 2607558
  md5: 6cd3b16d6d2cd53616941faed57133d2

## Thumbnail

fileset_id: f7363c52-5bb5-4aad-a98c-cb6e42a87750
filename: d4cp02012j.pdf