Quantum Dot and Perovskite Photodetector Technologies
Summary
Quantum dot and perovskite photodetectors represent a rapidly advancing class of optoelectronic devices that leverage the size‐tunable bandgap of nanoscale semiconductors and the exceptional light‐harvesting properties of halide perovskites. Quantum dots offer precise control over absorption and emission wavelengths through quantum confinement, enabling detection across ultraviolet, visible and near-infrared regimes. All‐inorganic and hybrid perovskite materials, with their direct bandgaps, high absorption coefficients and long carrier diffusion lengths, have emerged as low-cost, solution-processable candidates for compact photodetectors. Recent efforts have focused on improving environmental and operational stability through surface passivation, ligand engineering and encapsulation, while optimising charge transport via heterostructures and interfacial engineering. The marriage of quantum dots with perovskite matrices has yielded hybrid architectures in which sensitisation and funnelled charge extraction converge to enhance responsivity, detectivity and response speed. Such devices are poised to impact applications in multispectral imaging, wearable sensing, optical communications and environmental monitoring, all underpinned by scalable fabrication and integration onto flexible substrates.
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Quantum Dot and Perovskite Photodetector Technologies publication trend
The graph below shows the total number of articles in quantum dot and perovskite photodetector technologies across all publications each year (not limited to Nature Index journals).
Technical terms
Quantum dot: A nanoscale semiconductor crystal whose discrete energy levels and bandgap can be tuned by controlling its size and composition.
Perovskite: A class of materials with the ABX₃ crystal structure, often halide-based, known for high absorption coefficients and facile solution processing.
Photodetector: An electronic device that converts incident photons into an electrical signal, characterised by parameters such as responsivity and detectivity.
Responsivity: The ratio of photocurrent generated to incident optical power, indicating the efficiency of photon-to-electron conversion.
References
- Ultra‐Stable and Highly Luminescent Perovskite for Multi‐Color Ultraviolet Single‐Pixel Imaging. Advanced Science (2025).
- Organic shell engineering of CsPbBr 3 perovskite quantum dots for efficient textile-based photodetectors. Journal of Materials Chemistry A (2025).
- Enhanced Optoelectronic Response of TiO2 Photodetector Sensitized via CuInSe2 Quantum Dots. Nanomaterials (2025).
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