Kazuo Nakajima、Satoshi Ono、Yuzuru Kaneko 等 7 位作者2016-06-01OpenAlex
As an advanced cast method, we proposed the noncontact crucible (NOC) method to obtain ingots with large diameter and diameter ratio using small crucible. By controlling the size of the low-temperature region, a Si single ingot with a 45 cm diameter was obtained using a 50 cm diameter crucible. As the oxygen concentra…
Thin-Film Transistor TechnologiesSilicon and Solar Cell TechnologiesSilicon Nanostructures and Photoluminescence
Søren A. Jensen、P. Dippo、Lorelle M. Mansfield 等 5 位作者2016-06-01OpenAlex
We use two-wavelength excitation photoluminescence spectroscopy to probe defect states in CIGS thin films. Above-Egexcitation is combined with a tunable IR bias light that modulates the population of the defect states. We find that IR illumination in the range of 1400-2000 nm (0.62-0.89 eV) causes a reduction of the P…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications
Laura Manoliu、Iulia Andreea Mocanu2016-06-01OpenAlex
The main purpose of this work is to study the directional coupler with left handed transmission lines, investigating the symmetry of the cells, their number and dimensions, presenting the advantages and disadvantages of using a type or another. Moreover, a comparison between the directional coupler built with micro-st…
Antenna Design and AnalysisMetamaterials and Metasurfaces ApplicationsAdvanced Antenna and Metasurface Technologies
Wenzhu Liu、Liping Zhang、Renfang Cheng 等 5 位作者2016-06-01OpenAlex
Diameter (D) and number density (Avoids) of large voids in a-Si:H films are determined using an easy optical method. Electric measurements of heterostructures: a-Si:H/c-Si/a-Si:H find both D and A affect passivation of c-Si surfaces. Additionally, I-V measurements of silicon heterojunction (SHJ) solar cells reveal tha…
Thin-Film Transistor TechnologiesSilicon and Solar Cell TechnologiesSilicon Nanostructures and Photoluminescence
Daiji Kanematsu、Shuhei Yoshiba、Masakazu Hirai 等 8 位作者2016-06-01OpenAlex
We developed a slimming process of Si nanowall aiming at the Si nanowall solar cell whose band gap is tuned by the quantum size effect. The width of Si nanowall was successfully reduced to 3 nm by using thermal oxidation. The density of states (DOS) in Si nanowall was measured by ultraviolet photoelectron spectroscopy…
Silicon Nanostructures and PhotoluminescenceNanowire Synthesis and ApplicationsSemiconductor materials and interfaces
Veronique S. Gevaerts、Anne Biezemans、Quentin Passet 等 9 位作者2016-06-01OpenAlex
Digital printing of organic photovoltaic devices is presented as a viable option for the creation of increasingly complex device structures. Fully printed organic tandem junction devices were made that show a perfect summation of the open circuit voltages of the subcells. These results show the feasibility of complete…
Organic Electronics and PhotovoltaicsThin-Film Transistor TechnologiesConducting polymers and applications
Guglielmo G. Condorelli、A. Battaglia、Andrea Canino 等 6 位作者2016-06-01OpenAlex
A comparison of μc-Si and SiOxbased n layer with the aim to increase power conversion efficiency in a-Si-μc-Si thin film tandem solar cells is presented. We firstly optimized n-SiOxlayer tuning PECVD deposition parameters on 1.4m2area modules then compared the performance versus standard μc-Si n layer. By varying CO2/…
Thin-Film Transistor TechnologiesSilicon and Solar Cell TechnologiesSilicon Nanostructures and Photoluminescence
Fang‐Chi Hsu、Jhong-Yao Wang、Jeng-Yeh Huang 等 5 位作者2016-06-01OpenAlex
We have successfully demonstrated the use of polymer-Au-nanoparticle (Au-NP) nanocomposites as hole transport layer (HTL) materials for improving the performance of perovskite solar cells. In addition to the enhanced electrical properties of the HTL material itself, the embedded Au-NPs can also serve as light scatteri…
Organic Electronics and PhotovoltaicsPerovskite Materials and ApplicationsConducting polymers and applications
Serena Gallanti、Nicolas Loones、E. Chassaing 等 8 位作者2016-06-01OpenAlex
A new bath composition for ZnS buffer layer deposition is presented allowing its photochemical growth on CIGSe absorbers. The main advantages of this solution compared to classical CBD-Zn(S, O) bath are: the deposition occurs at room temperature, the concentration of chemical precursors is 10 times lower than classica…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications
Robel Fessehatzion、Hickey Ben、Johannes Vlcek 等 6 位作者2016-06-01OpenAlex
A CIGS deposition process based on sputtering and utilizing a stainless steel substrate is at particular risk for incorporating Cr and Fe contamination into the absorber film. This is a 5 year study of impurity and device performance data from the development of such a process. We have found a significant Voc benefit…
ZnO doping and propertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications
S. I. Goodridge、Patrick M. Lenahan、Chadwin D. Young 等 5 位作者2016-06-01OpenAlex
We report upon a new analytical approach for cadmium telluride/cadmium sulfide photovoltaic cells that is directly and exclusively sensitive to recombination center defects within the devices. The apparatus required to carry out these measurements is relatively straightforward and the response is robust. The measureme…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsSilicon and Solar Cell Technologies
Colton R. Bukowsky、Jonathan Grandidier、Katherine T. Fountaine 等 6 位作者2016-06-01OpenAlex
The sub-micrometer absorber regime is currently being explored to reduce materials usage and deposition time while simultaneously increasing device voltages due to increased generated carrier concentration. In order to realize these benefits, the absorption of photons must be maintained or even increased while avoidin…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications
Douglas M. Bishop、Talia Gershon、Yun Seog Lee 等 8 位作者2016-06-01OpenAlex
Cu2ZnSn(SxSe1-x)4(CZTSSe) photovoltaic devices are primarily limited by low open-circuit voltages, believed to be caused in part by disorder on the Cu/Zn sublattice. We show that band tailing in the absorber can be addressed by alloying Ag into CZTSSe to replace Cu. We fabricate thin films across the full alloy range…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsCopper-based nanomaterials and applications
Argyrios C. Varonides2016-06-01OpenAlex
Progress in chemically vapor deposited graphene layers on semiconductors (Si) offers new avenues for graphene based Schottky contact solar cells. Direct CVD graphene on silicon forms intimate (ideal) Schottky contact solar cells. Under illumination, thermally excited carriers from the majority and the graphene side re…
Graphene research and applicationsSilicon Nanostructures and PhotoluminescenceSemiconductor materials and interfaces
Kiran Ghimire、Dewei Zhao、Alex Cimaroli 等 7 位作者2016-06-01OpenAlex
CH3NH3PbI3perovskite films for photovoltaics (PV) have been deposited by vapor deposition and solution processing. Spectroscopic ellipsometry from the near infrared to ultraviolet (0.75 to 5.89 eV) is used to study the optical response of CH3NH3PbI3. In-situ spectroscopic ellipsometry is applied to monitor CH3NH3PbI3u…
Perovskite Materials and ApplicationsChalcogenide Semiconductor Thin FilmsSolid-state spectroscopy and crystallography
Seok Jun Han、Swapnadip Ghosh、Brittany R. Hoard 等 9 位作者2016-06-01OpenAlex
We experimentally demonstrate highly efficient light-trapping structures that is achieved by breaking the symmetry in inverted nanopyramids on c-Si. The fabrication of these structures is cost-effective and scalable. Our optical measurement for the structures on 10-μm-thick c-Si cells shows the Shockley-Queisser effic…
Thin-Film Transistor TechnologiesSilicon and Solar Cell TechnologiesSilicon Nanostructures and Photoluminescence
Oleh Yermakov、A. I. Ovcharenko、Andrey Bogdanov 等 6 位作者2016-06-01OpenAlex
Spin angular momentum is a fundamental property of the propagating optical waves. In this work, we reveal a possibility of the continuous transition from the transverse spin angular momentum as for the conventional surface plasmon-polariton to the longitudinal spin angular momentum as for the left and right circularly…
Metamaterials and Metasurfaces ApplicationsPlasmonic and Surface Plasmon ResearchOrbital Angular Momentum in Optics
Hongzhao Li、Brett Hallam、Stuart Wenham 等 4 位作者2016-06-01OpenAlex
In this study, we investigate the importance of the minority carrier lifetime (τp0) and surface recombination velocity (SRV) of industrial n-type emitters in improving emitter performance and improving solar cell efficiency. When emitters with higher τp0values are applied to Al-BSF and PERC solar cells separately, the…
Silicon and Solar Cell TechnologiesSilicon Nanostructures and PhotoluminescenceSemiconductor materials and interfaces
Md Arafat Mahmud、Naveen Kumar Elumalai、Mushfika Baishakhi Upama 等 8 位作者2016-06-01OpenAlex
Methyl Ammonium Lead Halide Perovskite solar have shown immense potential to be a “Game Changer” in the photovoltaic industry. Major barriers to commercialization of Perovskite solar cells are poor device stability and high temperature requirement with TiO2electron transport layer, widely used in efficient Perovskite…
Perovskite Materials and ApplicationsChalcogenide Semiconductor Thin FilmsConducting polymers and applications
Tasnuva Ashrafee、Orlando Ayala、Grace Rajan 等 10 位作者2016-06-01OpenAlex
Mo films were deposited on SLG substrates by sputtering to observe the influence of substrate temperature (Tss) and post-deposition annealing on film structure and alkali diffusion. The Mo films were characterized by XRD and AFM, indicating an increase of the grain size and a decrease of the roughness with Tss. After…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsSemiconductor materials and interfaces