Zhao Laboratory

Welcome to the Zhao Laboratory-WBG / UWBG Semiconductors, Electronic, Optoelectronics and Energy

The OSU MOCVD wide band gap (WBG) and ultra wide band gap (UWBG) Semiconductors, Electronics, Optoelectronics and Energy Laboratory is led by Prof. Hongping Zhao.

Our research focuses on the investigation of the growth and physics of WBG and UWBG semiconductor electronic and optoelectronic materials and devices, metalorganic chemical vapor deposition (MOCVD) of III-nitride and II-IV-nitride semiconductor thin films and devices, low pressure chemical vapor deposition (LPCVD) of Gallium Oxide thin films, the physics of low-dimensional semiconductor nano-materials/devices,  chemical vapor deposition (CVD) of novel nanomaterials, and device design / fabrication of novel devices with new functionality.

Fundamental knowledge from quantum mechanics, quantum electronics / optics, solid state physics, semiconductor physics, and electromagnetics will be used to solve problems related to semiconductor, electronics, optoelectronics and energy.

What’s New

  • Nov. 2018
    • Congratulations to Md Rezaul Karim and Zixuan Feng for passing their PhD qualifying exams!
    • Our group’s paper was on the APL’s top cited article list:  https://aip-info.org/1XPS-5YA4E-30C9NY3CD7/cr.aspx
    • Our group’s INVITED paper “Low Pressure Chemical Vapor Deposition of β-Ga2O3 thin films: dependence on growth parameters” was accepted for publication at APL Materials.
  • Sep. 2018
    • Prof. Zhao gave an invited talk at at the 2018 E-MRS Fall Meeting, Warsaw, Poland, Sep. 2018.
  • Aug. 2018
    • Our collaborative paper with Dr. Shin Mou’s team at AFRL “Donors and Acceptors in β-Ga2O3” was accepted for publication at Applied Physics Letters
    • Our work on “Design of InGaN-ZnSnN2 quantum wells for high-efficiency amber light emitting diodes” was highlighted at Semiconductor Today:  http://www.semiconductor-today.com/news_items/2018/aug/osu_020818.shtml
    • Prof. Zhao gave an invited talk “LPCVD Grown β-Ga2O3: Materials and devices” (Advanced Wide Bandgap Materials Technologies) at the 2018 SPIE Optics+Photonics, San Diego, CA
  • July 2018
    • NSF DMREF Project Workshop “SusChEM: Heterovalent Ternary Nitride Semiconductors and Mixed Ternary-Binary Heterostructures” was successfully organized at OSU Nanotech West Laboratory on July 20, 2018
    • 13 graduate students and research scientists from Profs. Zhao, Kash and Lambrecht’s groups attended and presented their work related to the project
  • July 2018
    • Our paper “Design of InGaN-ZnSnN2 quantum wells for high-efficiency amber light emitting diodes” was accepted for publication at Journal of Applied Physics
    • Our paper “LPCVD growth of wide bandgap semiconductor In2O3 films” was accepted for publication at ACS Crystal Growth & Design
    • Our collaborative paper with Prof. Feng’s group (CWRU) “β-Ga2O3 NEMS Oscillator for Real-Time Middle Ultraviolet (MUV) Light Detection” was accepted for publication at IEEE Electron Device Letters
  • May 2018
    • Our collaborative paper with Prof. Brillson’s group (OSU) “Optical Signatures of Deep Level Defects in Ga2O3” was accepted for publication at Applied Physics Letters
    • Prof. Zhao gave a talk “LPCVD of β-Ga2O3 and In2O3” (Cross Cutting Session: Energy Conversion and Storage) at the 2018 OSU Materials Week
  • Apr. 2018
    • Our paper “ZnO Nanowall Networks for Sensor Devices: From Hydrothermal Synthesis to Device Demonstration” was published at ECS Journal of Solid State Science and Technology
  • Feb. 2018
    • Our collaborative paper with Dr. Selim Elhadj’s team (Lawrence Livermore National Laboratory) “Lifetime laser damage performance of β-Ga2O3 for high power applications” was accepted for publication at APL Materials
    • Editor’s Picks and Featured Articles at APL Materials
  • Jan. 2018
    • Our collaborative paper with Prof. Lussem’s group (Kent State U.) “Tuning charge carrier transport and optical birefringence in liquid-crystalline thin films: A new design space for organic light-emitting diodes” was accepted for publication at Scientific Reports
    • Our paper “LPCVD Homoepitaxy of Si Doped β-Ga2O3 Thin Films on (010) and (001) Substrates” was accepted for publication at Applied Physics Letters
    • Our collaborative paper with Prof. Rajan’s group “LPCVD grown β-Ga2O3 Bevel Field-plated Schottky Barrier Diodes” was accepted for publication at APEX
  • Dec. 2017   Congratulations to Subrina Rafique for her successful Ph.D. dissertation defense! Subrina will join Intel.
  • Nov. 2017   Our collaborative paper with Prof. Feng’s group (CWRU) “Free-Standing β-Ga2O3 Thin Diaphragms” was accepted for publication at Journal of Electronic Materials
  • Nov. 2017   Our collaborative paper with Prof. Feng’s group (CWRU) “Ultra-Wide-Bandgap β-Ga2O3 Nanomechanical Resonators with Spatially Visualized Multimode Motion” was accepted for publication at ACS Applied Materials & Interfaces
  • Nov. 2017   Our paper “Towards High-Mobility Heteroepitaxial β-Ga2O3 on Sapphire – Dependence of the Substrate off-axis Angle” was accepted for publication at Phys. Status Solidi A
  • Oct. 2017   Prof. Zhao was appointed as an associate editor for Applied Physics Letters
  • Oct. 2017   Prof. Zhao gave an invited talk at the 232th ECS Meeting, National Harbor, Maryland
  • Oct. 2017   Our group’s lab space in Caldwell Lab 307/311 finished renovation. Ready to move in!
  • Sep. 2017   Prof. Zhao gave a Physics Department Seminar at Purdue University
  • Sep. 2017   Dual-chamber MOCVD system was delivered to OSU Nanotech West Laboratory
  • Aug. 2017   Our research group moved to OSU
  • Jul. 2017   Our group’s first Ph.D. graduate Dr. Lu Han joined Intel