نتایج جستجو برای: optoelectronic characterization

تعداد نتایج: 381618  

2012
Sang Hyun Lee Chad M Parish Jun Xu

Various surface structures and polarities of one-dimensional nanostructures offer additional control in synthesizing heterostructures suitable for optoelectronic and electronic applications. In this work, we report synthesis and characterization of ZnO-CdO nanorod-based heterostructures grown on a-plane sapphire. The heterojunction formed on the sidewall surface of the nanorod shows that wurtzi...

2013
Sébastien Nanot Aron W. Cummings Cary L. Pint Akira Ikeuchi Takafumi Akiho Kazuhisa Sueoka Robert H. Hauge François Léonard Junichiro Kono

Increasing performance demands on photodetectors and solar cells require the development of entirely new materials and technological approaches. We report on the fabrication and optoelectronic characterization of a photodetector based on optically-thick films of dense, aligned, and macroscopically long single-wall carbon nanotubes. The photodetector exhibits broadband response from the visible ...

2011
Anna Calabrese Andrea Pellegrino Riccardo Po Nicola Perin Alessandra Tacca Luca Longo Nadia Camaioni Francesca Tinti Siraye E. Debebe Salvatore Patanè Alfio Consoli

We report the synthesis and the optoelectronic characterization of a new family of random conjugated copolymers based on 9,9-bisalkylfluorene, thiophene and benzothiadiazole monomers unit synthesized by a palladiumcatalyzed Suzuki cross-coupling reaction. The photophysical, thermal, electrochemical properties were investigated. The electronic structures of the copolymers were simulated via quan...

2011
T. Hasan V. Scardaci P. H. Tan F. Bonaccorso A. G. Rozhin Z. Sun

Polymer composites are an attractive near-term means to exploit the unique properties of single wall carbon nanotubes and graphene. This is particularly true for composites aimed at photonic and optoelectronic applications, where a number of devices have already been demonstrated. These include transparent conductors, saturable absorbers, electroluminescent and photovoltaic devices. Here, we pr...

Journal: :Nano letters 2014
Lola Brown Edward B Lochocki José Avila Cheol-Joo Kim Yui Ogawa Robin W Havener Dong-Ki Kim Eric J Monkman Daniel E Shai Haofei I Wei Mark P Levendorf María Asensio Kyle M Shen Jiwoong Park

We report the scalable growth of aligned graphene and hexagonal boron nitride on commercial copper foils, where each film originates from multiple nucleations yet exhibits a single orientation. Thorough characterization of our graphene reveals uniform crystallographic and electronic structures on length scales ranging from nanometers to tens of centimeters. As we demonstrate with artificial twi...

Journal: :Nano letters 2016
Carolin M Sutter-Fella Yanbo Li Matin Amani Joel W Ager Francesca M Toma Eli Yablonovitch Ian D Sharp Ali Javey

Hybrid organic-inorganic halide perovskite based semiconductor materials are attractive for use in a wide range of optoelectronic devices because they combine the advantages of suitable optoelectronic attributes and simultaneously low-cost solution processability. Here, we present a two-step low-pressure vapor-assisted solution process to grow high quality homogeneous CH3NH3PbI3-xBrx perovskite...

2008
Arash Jamshidi Aaron T. Ohta Justin K. Valley Hsan-Yin Hsu Steven L. Neale Ming C. Wu

Optofluidics is the process of integrating the capabilities of optical and fluidic systems to achieve novel functionalities that can benefit from both. Among the novel capabilities that an optical system can bring to the table is the ability to manipulate objects of interest in a liquid media. In the case of biological samples, the objects of interest consist mainly of cells and viruses, wherea...

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