Strategically constructed hybrid bulk-heterojunction for efficient flexible self-powered infrared photodetectors with a carbon electrode
The construction of an admirable hybrid bulk-heterojunction (HBH) can benefit the performance of optoelectronic devices through efficient charge separation and transportation. However, the present HBH structure still suffers from complicated layer-by-layer ligand exchanges during device fabrication. In this work, we apply a liquid phase exchange strategy in mixed colloidal hybrids composed of quantum dots (QDs) and nanotetrapods (NTs) and construct low-cost flexible self-powered infrared photodetectors with a carbon electrode. The one-pot ligand exchange enables a concentrated hybrid solution for one-step formation of a HBH film that delivers a superior photodetection with enhanced responsivity (1154 mA W<sup>-1</sup>) and detectivity (9.91 × 10<sup>12</sup> Jones) at 808 nm, a state-of-the-art performance for flexible carbon based self-powered photodetectors. The superior optoelectronic performance is attributed to facilitated charge transfer and depressed charge nonradiative recombination due to the existence of hyperbranched NTs and admirable surfactant exchange on hybrids.
Authors
- Gentian Yue (ORCID: https://orcid.org/0000-0001-7560-2186)
- G. Wang
- Chen Dong (ORCID: https://orcid.org/0000-0003-2745-0258)
- Furui Tan (ORCID: https://orcid.org/0000-0003-1602-0869)
- Yueyue Gao (ORCID: https://orcid.org/0000-0001-7481-1330)
- Jianfeng Ding (ORCID: https://orcid.org/0009-0004-8102-0990)
- Xinying Liu (ORCID: https://orcid.org/0000-0002-1629-0298)
Publication Details
- Journal
- Optics Letters
- Published
- 2024-12-19
- DOI
- https://doi.org/10.1364/ol.541100
- Primary Topic
- Quantum Dots Synthesis And Properties
- Type
- article
- Field-Weighted Citation Impact
- 0.00