Members of the ASU MBE Optoelectronics Group actively participated in the 39th North American Conference on Molecular Beam Epitaxy (NAMBE 2025), sharing their latest research results with the MBE community. Prof. Yong-Hang Zhang gave the Art Gossard MBE Innovator Awardee Talk, “6.1 Å to 6.5 Å Families: from Type-II Superlattice IR Lasers and Detectors to…

We are delighted to congratulate Professor Yong-Hang Zhang on receiving the Art Gossard MBE Innovator Award at NAMBE 2025. This award recognizes his pioneering contributions to Molecular Beam Epitaxy, including breakthroughs in type-II superlattice infrared devices and remote-junction solar cells. His recognition highlights the global impact of ASU’s MBE Optoelectronics Group.

Henry Garland, a rising undergraduate senior at Northern Arizona University, worked in the MBE Optoelectronics group under the guidance of Prof. Dr. Yong-Hang Zhang, Allison McMinn, Razine Hossain, Xiaoyang Liu, and Dr. Zheng Ju. His project was to perform temperature-dependent photoluminescence spectroscopy measurements of InAs/InAsSb and InAs/Ga(In)Sb type-II superlattices. He also aided in thorough MBE troubleshooting to…

Nathan Rosenblatt presented the group’s work (spearheaded by Xin Qi, Zheng Ju, and Xiaoyang Liu) on interface Fermi-level engineering for efficient CdTe solar cells without p-type doping at PVSC 2025. The talk was nominated for a best student presentation award and presents our results recently published in Solar RRL

Congratulations to Preston Webster for winning the prestigious Young Investigator Award of the NAMBE 2025. Preston is our center alumnus and received his PhD under the supervision of Shane Johnson in very close collaboration with our MBE Optoelectronics Group in a MURI program.  We are very proud of his achievements.

Congratulations again to the MBE Optoelectronics Group for another recent paper chosen by Solar RRL as the cover page story. A recent article by the ASU MBE Optoelectronics group has been selected as the cover article in Solar RRL. The paper, titled “Monocrystalline CdSeTe/MgCdTe Double-Heterostructure Solar Cells”, reports monocrystalline CdSeTe/MgCdTe double-heterostructure solar cells with varying Se compositions in the…

Congratulations to the MBE Optoelectronics Group for their recent paper chosen by Solar RRL as a cover page story. A recent article by the ASU MBE Optoelectronics group has been selected as the cover story in Solar RRL. The paper, titled “Interface Fermi-Level Engineering for Selective Hole Extraction Without P-Type Doping in CdTe Solar Cells…

Achieving effective p-type doping remains a major challenge in CdTe, nitrides, and various oxides. The high dopant activation energies in these materials limit the concentration of ionized carriers, thereby impeding device performance. To address this issue, we have developed an innovative approach—interface Fermi-level engineering—using interface states and charge transfer effects to tailor Fermi level without…

ASU MBE Group organized a spring reunion at Evelyn Hallman Park in Tempe on April 12. The event brought together current group members, alumni, and friends from other research groups for a fun and relaxing day outdoors. Everyone enjoyed good food, games, and conversations. In addition to catching up socially, some attendees also discussed their…

We are pleased to congratulate Dr. Xin Qi on the successful defense of his Ph.D. dissertation, entitled “Study of Thin-Film Cd(Se)Te/MgCdTe Double-Heterostructure Solar Cells and Novel Epitaxial Lift-off Techniques.” Dr. Qi will join Texas A&M University as a postdoctoral researcher. We wish him continued success in his academic career and look forward to future collaborations…