Highly Photosensitive Colloidal Quantum Well Based Nanocrystal Skins Assisted by Orientation Control.

ABSTRACT: Colloidal quantum wells (CQWs) exhibit superior optical characteristics, including giant oscillator strengths and high absorption cross sections, making them attractive for light-sensing applications. In this study, we fabricated light-sensitive nanocrystal skin (LS-NS) devices using a single-layer edge-up oriented CQW film as the active absorber and achieved a significant enhancement in the performance by leveraging the controlled orientation of the self-assembled CQWs. The LS-NS devices with edge-up oriented CQW film show eight times higher sensitivity and three times higher voltage build-up compared to LS-NS devices with spin-coated CQW films. Such enhancements are due to the trapping of the holes on the edges of the CQWs because of defect-ridden edges, which helps hopping of the holes

SUBMITTER: Isik F 

PROVIDER: S-EPMC12670507 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature