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  • Growth, Characterizations, and Applications of Patterned Nanostructured Thin Film

    Creator:
    Gao, Zhongwei
    Abstract:
    A unique microreactor-assisted nanomaterial synthesis and printing process was studied for the fabrication of patterned metal oxide nanostructured thin films. The process uses a continuous flow microreactor to control and generate a reactive chemical flux that was transported to a patterned microfluidic channel. The microreactor-assisted nanomaterial synthesis process can generate...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Zhongwei Gao for

  • A Fabrication Process and Analysis of ZnO-ZnS-Sb₂S3₃ Thin Film Solar Cells

    Creator:
    Catherall, David
    Abstract:
    The purpose of this research is to provide a simple fabrication method for zinc oxide and antimony sulfide based thin film solar cells. Both a ZnO nanorod electron conducting structure and a stibnite absorber show promise in a solar cell. Initial attempts at using only ZnO and Sb2S3, however, resulted...
    Resource Type:
    Honors College Thesis
    Full Text:
    ______________________________________________________________________________ Zhongwei Gao, Committee Member, representing Chemical, Biological, and Environmental

  • Large-scale Generation of Patterned Bubble Arrays on Printed Bi-functional Boiling Surfaces

    Creator:
    Choi, Chang-Ho, David, Michele, Gao, Zhongwei, Chang, Alvin, Allen, Marshall, Wang, Hailei, and Chang, Chih-hung
    Abstract:
    Bubble nucleation control, growth and departure dynamics is important in understanding boiling phenomena and enhancing nucleate boiling heat transfer performance. We report a novel bi-functional heterogeneous surface structure that is capable of tuning bubble nucleation, growth and departure dynamics. For the fabrication of the surface, hydrophobic polymer dot arrays are...
    Resource Type:
    Article
    Full Text:
    Chang-Ho Choi Michele David Zhongwei Gao Alvin Chang

  • Formation of Cu₂ZnSnS₄ Thin Films via Reactive Sintering of Binary Metal-Sulfide Nanoparticles Using Intense Pulsed Light

    Creator:
    Zeng, Cheng
    Abstract:
    Copper zinc tin sulfide (CZTS) is a potential solar material for thin film solar cells according to its suitable band gap in the visible light range, high absorption coefficient, low toxicity, good photostability and relative earth abundance of component elements. However, the production cost of this solar thin film material...
    Resource Type:
    Masters Thesis
    Full Text:
    . Yujuan He and Dr Zhongwei Gao for the help of scaanning electron microscope and transmission electron

  • Novel Interfacial Syntheses of Covalent Organic Frameworks

    Creator:
    Liu, Ziyan
    Abstract:
    Covalent organic frameworks (COFs) are an emerging type of microporous crystalline polymers connected by organic units via strong covalent bonds. Due to the well-defined crystalline structure and excellent chemical and thermal stabilities, COF materials are being considered as promising candidates in a variety of applications, such as gas adsorption, catalysis...
    Resource Type:
    Masters Thesis
    Full Text:
    also want to thank all of my group members Changqing Pan, Yujuan He, Zhongwei Gao, Yujing Zhang, Han

  • Down-Shifting Nanoparticles and Anti-reflective Nanoparticles Co-Coating Applied on Top Glass Cover of Silicon-Based Solar Panels

    Creator:
    Jing, Qun
    Abstract:
    Photoluminescence (PL) materials have attracted a lot of attention in last several decades. Recently PL materials, which can convert low-efficiency Ultraviolet (UV) or Infrared (IR) light to high-efficiency visible light, have been widely applied in the research of improving conversion efficiency of solar cell. As one of the most common...
    Resource Type:
    Masters Thesis
    Full Text:
    , Zhongwei Gao, Dick Chiu, Michele David, Mei Han and Shujie Li for their help and wonderful time spending

  • Low-temperature, Inkjet-printed p-Type Copper(I) Iodide-based Thin-Film Transistors

    Creator:
    Gorecki, Jenna Y.
    Abstract:
    Inkjet-printed p-type copper(I) iodide-based TFTs were successfully fabricated. As-printed copper(I) halide semiconductor films, such as CuI, CuBrI, and CuClI, were used as p-type active channel layers for TFTs. The entire process of the TFTs fabrication was maintained under 150 °C, which is compatible with flexible plastic substrates and transparent glass...
    Resource Type:
    Masters Thesis
    Full Text:
    helpful. I would like to thank to Yujuan He, Han Mei, Zhongwei Gao, Dick Chiu, Changqing Pan

  • Iron Chalcogenide-based Thin Films Fabricated by Inkjet Printing

    Creator:
    Fang, Zhen
    Abstract:
    Digital printing techniques offer several advantages in manufacturing electronics such as direct writing of materials, reduction of chemical waste, and scalability. In particular, printing can significantly simplify manufacturing processes by directly defining the channel area, the gate, and the source and drain contacts, allowing for lower costs and higher throughput...
    Resource Type:
    Masters Thesis
    Full Text:
    who trained me how to use many tools and helped me to fabricate TFTs. I would like to thank Zhongwei

  • Synthesis of Plasmonic-Enhanced Metal-Organic Framework Thin Films and their Infrared Sensing Application

    Creator:
    Ma, Guoheng
    Abstract:
    Transparent and electrically conductive metal oxide nanoparticles have attracted much attention, and can be used to improve the performance of solar cells, transparent electrode materials, and gas sensor technology. Specifically, indium tin oxide (ITO) nanocrystals (NCs) are potentially useful nanomaterials, having technological applications in enhanced sensitivity of optical spectroscopy due...
    Resource Type:
    Masters Thesis
    Full Text:
    thank Zheng Fang for his help in O2 plasma treatment, and to Yujuan He, Zhongwei Gao, Dick Chiu, Jenna

  • Low-Cost Light Trapping Layer via Melting Gel and Hot Embossing Technique

    Creator:
    Xu, Han
    Abstract:
    Light trapping plays a phenomenal role in enhancing light confinement and light absorption within the solar cells, thus increasing the optical efficiency of the cell. Different strategies are employed for trapping light photons within the cell. Methods used include a substrate or single layer texturing, light trapping coating, plasmonic gratings,...
    Resource Type:
    Masters Thesis
    Full Text:
    under his guidance. Thanks to Dr. Zhongwei, Gao, for his advice and time at the beginning of my