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Open Circuit Voltage Photodetector
TS-065426 — Photodetectors are devices that detect light and convert it into an electrical signal. They operate based on the photoelectric effect, in which photons (light particles) strike the semiconductor material, creating electron-hole pairs that lead to the flow of electrical current that can be measured.
Existing photodetectors are susceptible to various noise sources, such as thermal and electronic. The noise can degrade the signal-to-noise ratio and affect the accuracy of measurements, particularly in low-light conditions. This technology is an open-circuit voltage photodetector (OCVP) that…
  • College: College of Engineering (COE)
  • Inventors: Krishna, Sanjay; Fuller, Earl; Kazemi, Alireza; Khalil, Waleed; Ronningen, TJ; Smith, Dale "Shane"; Specht, Teressa; Tantawy, Ramy "Ramy"
  • Licensing Officer: Zinn, Ryan

Monolithically Integrated Tunnel Junction-Based GaN Light Emitting Transistors
TS-065398 — Emissive display technologies (e.g., OLEDs) are display technologies that emit light directly to produce images. Unlike reflective displays, which rely on external light sources, emissive displays generate light, resulting in vibrant and high-contrast visuals. These next-generation displays are used in several applications, including mobile devices, AV/VR headsets, and wearable devices.
Although emissive displays are integrated into many electronic devices, they face some challenges. One of the primary issues is the integration of LEDs and electronic drivers when scaling into mesa dimensions. The mesa is a crucial parameter in display manufacturing as it determines the size of th…
  • College: College of Engineering (COE)
  • Inventors: Rajan, Siddharth; Jamal-Eddine, Zane; Joishi, Chandan "Chandan"; Rahman, Sheikh Ifatur
  • Licensing Officer: Zinn, Ryan

Bio-Matched Horn: A Novel 1-9 GHz On-Body Antenna for Low-Loss Biomedical Telemetry with Implants
TS-065135 — The use of wearable health devices has more than tripled in recent years due to the ability of these products to collect health data to detect potential health events (e.g., heart attacks), manage chronic diseases, and track physical activity. Wearable technologies have been shown to decrease the nu…
  • College: College of Engineering (COE)
  • Inventors: Blauert, John; Kiourti, Asimina
  • Licensing Officer: Randhawa, Davinder

Methods to improve the jitter and time walk of integrated constant fraction discriminators
TS-064826 — The Need Accurate measurements of energy and time-of-arrival of photons, particles, or ionizing radiation are crucial for identifying individual particles and enhancing spatial and temporal resolution in various systems. Technologies such as Light Detection and Ranging (LiDAR), positron emission to…
  • College: College of Arts & Sciences
  • Inventors: Kagan, Harris; Abusareya, Mo'men; Khalil, Waleed; Smith, Dale "Shane"
  • Licensing Officer: Willson, Christopher

Invention of ultra-wide bandgap oxide semiconductor with p-type conductivity
TS-063961 — The Need In the realm of power device technologies, addressing the growing demand for efficient, high-performance semiconductors is paramount. The current gap in the availability of a p-type β-Ga2O3 semiconductor poses a significant challenge, hindering the progress of device fabrication metho…
  • College: College of Engineering (COE)
  • Inventors: Zhao, Hongping; Zhang, Kaitian
  • Licensing Officer: Randhawa, Davinder

Ultrawide bandgap oxide semiconductor LiGaO2 with p-type conductivity for power device applications
TS-063784 — The Need In the realm of power electronics, the industry is seeking advanced semiconductor materials that can address the ever-growing demand for high power density and high-frequency applications. Beta phase gallium oxide (β-Ga2O3) with an ultrawide bandgap (UWBG) of approximately 4.8 eV emer…
  • College: College of Engineering (COE)
  • Inventors: Zhao, Hongping; Zhang, Kaitian
  • Licensing Officer: Randhawa, Davinder

Suppressing background carbon incorporation using laser-assisted MOCVD growth of nitride-based semiconductors
TS-063717 — The Need In the world of semiconductor material systems, the demand for advancements in optoelectronic and power electronic devices is ever-growing. The fabrication of semiconductor films, crucial for these applications, primarily relies on epitaxy technologies such as hydride vapor phase epitaxy (…
  • College: College of Engineering (COE)
  • Inventors: Zhao, Hongping; Chen, Zhaoying; Zhang, Yuxuan
  • Licensing Officer: Randhawa, Davinder

High-K Dielectric barriers to suppress internal photoemission photocurrents
TS-063471 — In an increasingly digital world, the demand for efficient and reliable photodetectors is paramount. These devices are critical for a variety of applications, from medical imaging to defense systems. However, traditional photodetectors often struggle with low UV-visible rejection, limiting their e…
  • College: College of Engineering (COE)
  • Inventors: Rajan, Siddharth; McGlone, Joseph "Joe"; Wriedt, Nathan
  • Licensing Officer: Zinn, Ryan

Monolayer Etching of Wurtzite GaN/AlGaN/AlN Using Cyclic O2 Plasma and Atomic Ga/Al Flux Exposure
TS-063466 — In the rapidly evolving world of semiconductor technology, there is a growing demand for efficient and precise methods of etching Gallium Nitride (GaN)-based semiconductors. Traditional wet and dry etching processes often damage the GaN, compromising the quality and performance of the final produc…
  • College: College of Engineering (COE)
  • Inventors: Rajan, Siddharth; Dheenan, Ashok; Rahman, Sheikh Ifatur; Wriedt, Nathan
  • Licensing Officer: Zinn, Ryan

3D subwavelength photonic detector coupled with dielectric resonator antenna
TS-063055 — New LWIR detector combining a dielectric resonator antenna (DRA) with a semiconductor absorber for improved signal, noise, and speed performance
Long Wavelength Infrared (LWIR) detectors are crucial in various fields, but traditional detectors face significant drawbacks in terms of size, thermal noise, and coupling efficiencies. Current detectors use cryogenic cooling in the form of mercury cadmium telluride (MCT), a significant drawback d…
  • College: College of Engineering (COE)
  • Inventors: Krishna, Sanjay; Ball, Christopher; Kazemi, Alireza; Ronningen, TJ; Shu, Qingyuan
  • Licensing Officer: Randhawa, Davinder

Laser Imaging of Gases for Real-Time Determination of Concentration and Location
TS-063051 — A stand-off gas detection system with active, laser-based sensing and imaging capabilities for commercial use
There is a critical need for a reliable, cost-effective, and safe method to detect gas leaks, particularly in gas lines to ensure the safety of service providers and customers. Distribution companies receive over 100,000 calls per year responding to gas odors, indicating potential leaks. The major…
  • College: College of Engineering (COE)
  • Inventors: Krishna, Sanjay; Ball, Christopher; Fink, Douglas "Rudy"; Fuller, Earl; Mooney, Douglas; Ringel, Brett; Ronningen, TJ
  • Licensing Officer: Randhawa, Davinder

Surface barrier engineering using AlGaO/GaO
TS-063001 — A new method of surface barrier engineering that introduces a linearly graded (AlxGa1-x)2O3 cap layer. This improves the Schottky barrier at the surface which results in a higher breakdown field.
Ga2O3 is a promising ultra-widebandgap semiconductor with many applications in power switching and RF electronics. Realizing those improvements requires efficient field management design to prevent premature breakdown due to electric field crowding at the device edges. There is a need to develop t…
  • College: College of Engineering (COE)
  • Inventors: Rajan, Siddharth; Dhara, Sushovan
  • Licensing Officer: Zinn, Ryan

Substrates for vertical power devices
TS-062951 — The Need In today's fast-paced technological landscape, there is an ever-growing demand for high-performance vertical power devices with enhanced breakdown voltage capabilities, exceeding 20 kV. Meeting this commercial need requires an innovative approach to semiconductor drift layer developmen…
  • College: College of Engineering (COE)
  • Inventors: Zhao, Hongping; Bhuiyan, A F M Anhar Uddin; Meng, Lingyu
  • Licensing Officer: Randhawa, Davinder

GaAsSb-AlGaAsSb Heterostructure Avalanche Photodiode
TS-062893 — A room temperature, ultra-high gain (M=278, λ=1550 nm, V=69.5 V, T=296 K) linear mode avalanche photodiode (APD) on an InP substrate using a GaAs0.5Sb0.5/Al0.85Ga0.15As0.56Sb0.44 separate absorption charge and multiplication (SACM) heterostructure.
An APD is a semiconductor-based analog of the photomultiplier. APDs exploit the impact ionization phenomenon and transform infrared (IR) light (l > 850 nm) into photocurrent. APDs have wide applicability; however, existing APDs have insufficient sensitivity and relatively high excess noise and …
  • College: College of Engineering (COE)
  • Inventors: Krishna, Sanjay; Jung, Hyemin; Lee, Seunghyun
  • Licensing Officer: Randhawa, Davinder

Antimonide based Separate Absorption Charge and Multiplication Avalanche Photodiode
TS-062892 — A room temperature, ultra-high gain (M=278, λ=1550 nm, V=69.5 V, T=296 K) linear mode avalanche photodiode (APD) on an InP substrate using a GaAs0.5Sb0.5/Al0.85Ga0.15As0.56Sb0.44 separate absorption charge and multiplication (SACM) heterostructure.
An APD is a semiconductor-based analog of the photomultiplier. APDs exploit the impact ionization phenomenon and transform infrared (IR) light (l > 850 nm) into photocurrent. APDs have wide applicability; however, existing APDs have insufficient sensitivity and relatively high excess noise an…
  • College: College of Engineering (COE)
  • Inventors: Krishna, Sanjay; Jung, Hyemin; Lee, Seunghyun
  • Licensing Officer: Randhawa, Davinder

Lateral Interband Type-II Engineered (LITE) Detector
TS-062847 — Avalanche photodiodes (APDs) that target a wavelength of 1550 nm have several applications ranging from optical communications to imaging to single photon detection. There is increasing interest in APDs for longer wavelengths. A distinctive feature of an APD is high sensitivity due to the gain ach…
  • College: College of Engineering (COE)
  • Inventors: Krishna, Sanjay; Kodati, Sri Harsha; Lee, Seunghyun; Ronningen, TJ
  • Licensing Officer: Randhawa, Davinder

Light Source in Silicon Photonics
TS-062691 — The continued push for high speed, low power, and compact solutions has given rise to the field of integrated optics/photonics, which aims to combine the high bandwidth and low loss transmission of fiber optic technology with the large device density and high production volume of modern microelect…
  • College: College of Engineering (COE)
  • Inventors: Reano, Ronald; Patton, Ryan; Wood, Michael
  • Licensing Officer: Zinn, Ryan

RF Energy Harvesting Wireless Mobile Device Charger
TS-062601 — Only a small fraction of the radio frequency (RF) energy transmitted by smartphones and other wireless devices is used to communicate with a wireless access point. It would be useful to collect or harvest the unused RF signals in order to convert them to direct current (DC) power and supplement th…
  • College: College of Engineering (COE)
  • Inventors: Chen, Chi-Chih; Koksal, C. Emre; Shroff, Ness; Tallos, Roland
  • Licensing Officer: Zinn, Ryan

Passive RF Rectifier Circuit Design with Harmonic Harvester
TS-062596 — Conventional rectifying circuit designs convert alternating-current (AC) signals into direct-current (DC) signals via the used of diodes. Low-barrier Schottky diodes are used in low AC power cases such as with ambient radio frequency (RF) signals. Ideally, each diode is only turned on during the p…
  • College: College of Engineering (COE)
  • Inventors: Chen, Chi-Chih
  • Licensing Officer: Zinn, Ryan

Utilization of Inductors in Electronics Circuits as Magnetohydrodynamics Pumps for Liquid Metal based Cooling
TS-062498 — Novel integrated inductor-based magnetohydrodynamic (MHD) pumps containing liquid metal coolant significantly enhance the thermal management of large-scale, complex electronic systems housed in confined spaces
Conventional thermal management methods such as air-cooling and liquid cooling methods commonly used for electronics present in laptops, desktop computers, and smaller electronic configurations show limitations when scaled up for complex electronics architectures. High-power and high-voltage elect…
  • College: College of Engineering (COE)
  • Inventors: Wang, Jin; Fan, Junchong
  • Licensing Officer: Ashouripashaki, Mandana

Utilization of Interconnections in Electronic Circuits as Magnetohydrodynamic Pumps for Liquid Metalbased Cooling
TS-062494 — A novel magnetohydrodynamic (MHD) pump-based thermal management system design where integration of the cooling apparatus using electronic circuit interconnections achieves improved thermal management at a lower cost.
Newer applications incorporating high-power electronics designs face greater thermal management challenges and impact systemic stability and reliability. Enhanced cooling techniques in these complex electronic systems rely on liquid cooling instead of air cooling. However, liquid cooling approache…
  • College: College of Engineering (COE)
  • Inventors: Wang, Jin; Fan, Junchong
  • Licensing Officer: Ashouripashaki, Mandana

Method to Create Patterned Thin Films of Lithium Niobate for Hybrid Integrated Photonics
TS-062492 — Photonic integration is driven by demand for smaller size, lower cost, lower power consumption, easier assembly, higher reliability, and greater data density in modern photonic devices and systems. Among the many platforms, silicon photonics is particularly promising for photonic integration due t…
  • College: College of Engineering (COE)
  • Inventors: Reano, Ronald; Chen, Li
  • Licensing Officer: Zinn, Ryan

Use of electromagnetic signature to determine the type of integrated circuit
TS-062488 — Currently, the main method used to detect counterfeit integrated circuits (IC's) is a very simplistic approach based on visual inspection. Unfortunately, many sophisticated counterfeit IC's are indistinguishable from authentic since visually they look almost exactly the same. Dr. Robert…
  • College: College of Engineering (COE)
  • Inventors: Lee, Robert; Chapman, Gregg; Nechiyil, Aditya
  • Licensing Officer: Zinn, Ryan

Strontium oxide as a tunnel barrier for spin injection and giant spin accumulation
TS-062333 — The Need In today's advancing electronics industry, the growing demand for high-performance devices, coupled with the need for energy efficiency in portable electronics, presents a critical challenge. The primary concern revolves around high power dissipation, leading to undesirable heating of …
  • College: College of Arts & Sciences
  • Inventors: Kawakami, Roland "Roland"; Katoch, Jyoti; Singh, Simranjeet
  • Licensing Officer: Willson, Christopher

Formation of carbon containing semi-insulating layers in β-Ga2O3 based structures and devices
TS-061850 — High-quality beta-gallium oxide (β-Ga2O3) based semi-insulating layers enable high power/high-frequency electronics, ultraviolet optoelectronics, and more.
The Need β-Ga2O3 has spurred substantial interest in semiconductors and transistors in high-power/high-frequency electronics and ultraviolet optoelectronics. However, challenges exist in the controlled doping of semi-insulating layers of β-Ga2O3, limiting the material’s full potenti…
  • College: College of Engineering (COE)
  • Inventors: Zhao, Hongping; Bhuiyan, A F M Anhar Uddin; Meng, Lingyu
  • Licensing Officer: Randhawa, Davinder

A lightweight, miniaturized, and portable readout circuits for tracking LRC-based wireless sensor
TS-061832 — A portable and lightweight readout circuit designed for use with LRC-based wireless sensors and in conjunction with other commonly used devices (e.g., smartphone, laptop, and tablet)
The Need Conventional vector network analyzers are bulky and expensive and tend to limit the ability to be used for daily tracing or high-frequency health status tracking in people. To overcome this and other limitations present in the cumbersome designs of today, compact-sized devices that take ad…
  • College: College of Engineering (COE)
  • Inventors: Li, Jinghua; Liu, Tzu Li
  • Licensing Officer: Ashouripashaki, Mandana

Development of thick β-(AlxGa1-x)2O3 films with low-Al content for vertical power devices
TS-061767 — Current semiconductor materials used in power devices are reaching their performance limits. Inventors at OSU have developed a new method of fabricating thick β-(AlxGa1-x)2O3 films to enable low-Al content. The result is a lower cost of production and the ability to support next-generation optoelectronic and high-power device applications.
The Need Currently, β-Ga2O3 is used as the semiconductor material for developing next-generation electronic devices to support various high-power applications ranging from telecommunication to electric vehicles (EVs). Yet, the use of β-Ga2O3 is introducing significant production costs…
  • College: College of Engineering (COE)
  • Inventors: Zhao, Hongping; Bhuiyan, A F M Anhar Uddin; Meng, Lingyu
  • Licensing Officer: Randhawa, Davinder

High Efficiency LED Designs Using Quantum Well Engineering
TS-057127 — Achieving high efficiency LEDs with green, amber and longer wavelengths using III-nitride/II-IV-nitride heterostructures as the active media.
Although extensive research and development over the past two decades has resulted in close to 100% external quantum efficiency (EQE) of InGaN based blue light emitting devices, efficiency of the longer visible wavelength emitting devices has remained relatively low. Spontaneous polarization origi…
  • College: College of Engineering (COE)
  • Inventors: Zhao, Hongping; Zhang, Kaitian
  • Licensing Officer: Randhawa, Davinder

Weak Field Skyrmion Nucleation for Spintronic Memory Devices
TS-054326 — Magnetic skyrmions are unique and stable magnetic spin structures extensively studied in condensed matter physics. They are actively being developed due to their potential application in advanced memory chips. These skyrmion-based memory structures have advantages such as high density, low energy consumption, and resistance to disturbances, making them an attractive option for next-generation data storage.
Although skyrmions have the potential to revolutionize the memory industry, they are currently limited by materials and manufacturing practices. Hence, it is essential to identify new materials where small, stable skyrmions can be reliably manufactured and manipulated. This technology produces …
  • College: College of Engineering (COE)
  • Inventors: Wang, Binbin; McComb, David
  • Licensing Officer: Zinn, Ryan

Modular Dc Circuit Breaker with Integrated Energy Storage for Future Dc Networks
TS-051200 — Traditional AC distribution is not suitable for a wide range of applications in regard to efficiency, cost, and power carrying capacity compared to alternative distributions. Low voltage distribution suffers from high transmission losses due to higher current requirements necessitating thicker, he…
  • College: College of Engineering (COE)
  • Inventors: Wang, Jin; Na, Risha; Zhang, Yue
  • Licensing Officer: Ashouripashaki, Mandana

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