ArticleScientific reports2021
Quantum dot and electron acceptor nano-heterojunction for photo-induced capacitive charge-transfer.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Near-infrared organic photoelectrochemical synaptic transistors by wafer-scale photolithography for neuromorphic visual system.Nature communications · 2025Article
- A Retina-Inspired Optoelectronic Synapse Using Quantum Dots for Neuromorphic Photostimulation of Neurons.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- A Retina-Inspired Optoelectronic Synapse Using Quantum Dots for Neuromorphic Photostimulation of Neurons.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- Article
- Optoelectronic Neural Interfaces Based on Quantum Dots.ACS applied materials & interfaces · 2022Review
- Cadmium-Free and Efficient Type-II InP/ZnO/ZnS Quantum Dots and Their Application for LEDs.ACS applied materials & interfaces · 2021Article
- Nanoengineering InP Quantum Dot-Based Photoactive Biointerfaces for Optical Control of Neurons.Frontiers in neuroscience · 2021Article
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Authors and funding
7 authors.
Funding
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Abstract
Capacitive charge transfer at the electrode/electrolyte interface is a biocompatible mechanism for the stimulation of neurons. Although quantum dots showed their potential for photostimulation device architectures, dominant photoelectrochemical charge transfer combined with heavy-metal content in such architectures hinders their safe use. In this study, we demonstrate heavy-metal-free quantum dot-based nano-heterojunction devices that generate capacitive photoresponse. For that, we formed a novel form of nano-heterojunctions using type-II InP/ZnO/ZnS core/shell/shell quantum dot as the donor and a fullerene derivative of PCBM as the electron acceptor. The reduced electron-hole wavefunction overlap of 0.52 due to type-II band alignment of the quantum dot and the passivation of the trap states indicated by the high photoluminescence quantum yield of 70% led to the domination of photoinduced capacitive charge transfer at an optimum donor-acceptor ratio. This study paves the way toward safe and efficient nanoengineered quantum dot-based next-generation photostimulation devices.
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Registered trials
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