38 Results for 'Zhenqiang Ma'
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Technology
Hybrid Tandem Solar Cells With Improved Tunnel Junction Structures
Tandem solar cells comprising two or more solar cells connected in a solar cell stack via pn diode tunnel junctions and methods for fabricating the tandem solar cells using epitaxial lift off and tran...
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Zhenqiang Ma, Hongyi Mi, Tzu-Hsuan Chang, Shaoqin Gong, Kanglin Xiong, Jung-Hun Seo | P160030US01
Technology
Superlattice Heterostructures Formed With Single Crystalline Semiconductor Nanomembranes And Amorphous Tunneling Barrier Layers
Superlattice structures composed of single-crystal semiconductor wells and amorphous barriers are provided. Also provided are methods for fabricating the superlattice structures and electronic, optoel...
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Zhenqiang Ma, Munho Kim, Jung-Hun Seo, Sang June Cho | P180228US01
Technology
High Performance, High Electron Mobility Transistors With Graphene Hole Extraction Contacts
Radiation detectors based on high electron mobility transistors (HEMTs) are provided. Methods for detecting ultraviolet radiation using the HEMTs are also provided. The transistors are constructed fro...
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Zhenqiang Ma, Tzu-Hsuan Chang | P170305US01
Technology
Atomic Layer Chemical Patterns For Block Copolymer Assembly
Provided herein are methods of directed self-assembly (DSA) on atomic layer chemical patterns and related compositions. The atomic layer chemical patterns may be formed from two-dimensional materials ...
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Zhenqiang Ma, Paul Nealey, Michael Arnold, Robert Jacobberger, Tzu-Hsuan Chang, Shisheng Xiong | P150238US02
Technology
Lattice Mismatched Heterojunction Structures And Devices Made Therefrom
Semiconductor heterojunction structures comprising lattice mismatched, single-crystalline semiconductor materials and methods of fabricating the heterojunction structures are provided. The heterojunct...
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Zhenqiang Ma, Jung-Hun Seo | P110281US01
Technology
Flexible Compact Nanogenerators Based On Mechanoradical-Forming Porous Polymer Films
Power generators that incorporate porous electric generation layers composed of mechanoradical-forming polymers are provided. Also provided are methods for using the generators to convert mechanical e...
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Shaoqin Gong, Qifeng Zheng, Zhenqiang Ma, Yanfeng Tang | P160398US02
Technology
Flexible Thin-Film Transistors for Mass Production
Flexible electronics such as pliant displays, wearable electronics and new biomedical devices have gained popularity in recent years. Such devices are mounted on a supple plastic support layer and off...
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Zhenqiang Ma, Jung-Hun Seo | P150093US01
Technology
New Biodegradable Integrated Circuits Signal the Future of E-Waste Management
Electronic waste management remains an ongoing challenge both domestically and abroad. Scrap components of electronics such as computers, cellphones and refrigerators contain high amounts of heavy met...
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Zhenqiang Ma, Yei Hwan Jung, Shaoqin Gong, Tzu-Hsuan Chang | P150290US01
Technology
Flexible MOSFET Phototransistors Maximize Light Sensing
Photodetectors convert light signals into electrical signals and are indispensible components in most optoelectronic applications. These devices comprise various designs and materials. In recent years...
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Zhenqiang Ma, Jung-Hun Seo | P160090US01
Technology
Photoreceptor Scaffold for In Vitro Modeling and Transplantation Therapy
Photoreceptors are specialized cells that capture and convert light into signals that can be processed by the retina and visual centers of the brain. Supportive cells called the retinal pigment epithe...
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Zhenqiang Ma, Yei Hwan Jung, Michael Phillips, David Gamm, Shaoqin Gong | P160094US01
Technology
Boron-Doped Diamond for Next Generation Power Electronics
Diamond is considered a good material candidate for power electronics, offering reliability, low weight and power switching efficiency. Single-crystalline diamond (SCD) has the best overall properties...
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Zhenqiang Ma, Jung-Hun Seo | P140384US01
Technology
Thinner Reflector Stacks for Vertical-Cavity Surface-Emitting Lasers
Distributed Bragg reflectors (DBRs) are found in photodetectors, solar cells and other optical sensors. Stacks of DBRs are incorporated in vertical-cavity surface emitting lasers (VCSELs), which are a...
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Zhenqiang Ma, Jung-Hun Seo | P140364US01
Technology
Hybrid Heterostructure Light-Emitting Devices
Conventional light-emitting diodes (LEDs) are made of an upper ‘p-type’ layer, a middle ‘intrinsic region’ and a bottom ‘n-type’ layer. Such layered structures are called PIN diodes. Curre...
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Zhenqiang Ma, Jung-Hun Seo | P140343US01