MUMBAI, India, April 17 -- Intellectual Property India has published a patent application (202641042481 A) filed by Sr University, Warangal, Telangana, on April 2, for 'quantum dot-based photodetector for ultra-high sensitivity imaging.'
Inventor(s) include Dr. E. Purushotham; and Mr. Endla Akhil Balaji.
The application for the patent was published on April 17, under issue no. 16/2026.
According to the abstract released by the Intellectual Property India: "The present invention proposes a quantum dot-based photodetector designed for ultra-high sensitivity imaging under low-light and ultra-low illumination conditions. The system utilizes semiconductor quantum dots as the primary light-absorbing material, enabling enhanced optical absorption and tunable spectral response across visible, near-infrared, and infrared regions. The photodetector features a multilayer architecture comprising a substrate, transparent conductive electrode, quantum dot active layer, carrier transport layers, and a metal electrode, ensuring efficient photon-to-electrical signal conversion.The invention incorporates advanced surface passivation and ligand engineering techniques to minimize trap states and reduce charge recombination, thereby improving responsivity and signal-to-noise ratio. Optimized electron and hole transport layers facilitate efficient charge separation and rapid carrier transport, enabling fast response times suitable for real-time imaging applications. Additionally, a low-noise electronic readout circuit is integrated to amplify weak signals and ensure accurate detection under low illumination conditions.To enhance operational stability, the system includes a protective encapsulation layer that safeguards the quantum dot material from environmental degradation. The proposed design supports scalable and cost-effective fabrication using solution-based processes, allowing compatibility with large-area and flexible device manufacturing. Furthermore, the photodetector can be configured as a pixelated array for high-resolution imaging applications.Overall, the invention provides a compact, energy-efficient, and high-performance photodetection solution that overcomes the limitations of conventional technologies, making it suitable for applications in medical imaging, surveillance, environmental monitoring, and scientific instrumentation."
Disclaimer: Curated by HT Syndication.
