English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Self-doping can not only suppress the photogenerated charge recombination ofsemiconducting quantum dots by self-introducing trapping states within thebandgap, but also provide high-density catalytic active sites as theconsequence of abundant non-saturated bonds associated with the defects. Here,we successfully prepared semiconducting copper selenide (CuSe) confined quantumdots with abundant vacancies and systematically investigated theirphotoelectrochemical characteristics. Photoluminescence characterizationsreveal that the presence of vacancies reduces the emission intensitydramatically, indicating a low recombination rate of photogenerated chargecarriers due to the self-introduced trapping states within the bandgap. Inaddition, the ultra-low charge transfer resistance measured by electrochemicalimpedance spectroscopy implies the efficient charge transfer of CuSesemiconducting quantum dots-based photoelectrocatalysts, which is guaranteed bythe high conductivity of their confined structure as revealed byroom-temperature electrical transport measurements. Such high conductivity andlow photogenerated charge carriers recombination rate, combined withhigh-density active sites and confined structure, guaranteeing the remarkablephotoelectrocatalytic performance and stability as manifested byphotoelectrocatalysis characterizations. This work promotes the development ofsemiconducting quantum dots-based photoelectrocatalysis and demonstrates CuSesemiconducting quantum confined catalysts as an advanced photoelectrocatalystsfor oxygen evolution reaction.

Self-doping effect in confined copper selenide semiconducting quantum dots for efficient photoelectrocatalytic oxygen evolution