Laser-induced graphene as a versatile platform for colloidal quantum dot heterostructure photodetectors.

ABSTRACT: The growing demand for high-performance, flexible, and low-cost photodetectors has driven research interest in heterostructure-based architectures that integrate materials with complementary optical and electronic properties. In this study, we developed a heterostructure photodetector platform based on laser-induced graphene (LIG) and lead sulfide colloidal quantum dots (QDs). LIG, which is directly patterned on polyimide via laser irradiation, offers scalable mask-free fabrication with mechanical flexibility and excellent conductivity. To enhance charge transfer between the QDs and LIG, solid-state ligand exchange was performed, replacing the long-chain oleic acid ligands with short iodide ligands. This modification significantly improved charge transfer efficiency, resulting in a

SUBMITTER: Oh J 

PROVIDER: S-EPMC12670238 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature