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The structural ordering of thin silicon films at the amorphous to nano-crystalline phase transition by GISAXS and Raman spectroscopy

Gracin, D.; Juraic, K.; Gajovic, A.; Dubcek, P.; Devilee, C. - In: Renewable Energy 33 (2008) 2, pp. 326-330

Thin silicon films were deposited by the plasma-enhanced chemical vapour deposition method using microwave (MW) and standard radio frequency (RF) gas discharge in silane gas diluted by hydrogen in the range that produces a mixture of amorphous and crystalline phases. The samples were analysed by...

Persistent link: https://www.econbiz.de/10010806061

Effect of HCl addition on the properties of p-type silicon thin films during hot-wire chemical vapor deposition

Lee, Sang-Hoon; Chung, Yung-Bin; Lee, Sung-Soo; Jung, … - In: Renewable Energy 54 (2013) C, pp. 85-90

The effect of HCl addition on the structural, electrical, and optical properties of p-type silicon films, prepared by hot-wire chemical vapor deposition (HWCVD), was investigated. As the ratio of HCl to SiH4 increased, the amount of amorphous silicon decreased and the crystalline volume fraction...

Persistent link: https://www.econbiz.de/10011044855

Flexible TCO-free counter electrode for dye-sensitized solar cells using graphene nanosheets from a Ti–Ti(III) acid solution

Hung, Kai-Hsiang; Chan, Chin-Hao; Wang, Hong-Wen - In: Renewable Energy 66 (2014) C, pp. 150-158

A rapid and simple route to synthesize highly conductive graphene-based nanosheets for use as a flexible counter … layer, i.e., TCO-free. A clean graphene with high quality is obtained by the chemical reduction of graphene oxide (GO) using … hydrochloric acid solution result in a clean graphene material with no formation of TiO2 nanoparticles, which are always present on …

Persistent link: https://www.econbiz.de/10010806321

Thermodynamic properties and thermal stability of ionic liquid-based nanofluids containing graphene as advanced heat transfer fluids for medium-to-high-temperature applications

Liu, Jian; Wang, Fuxian; Zhang, Long; Fang, Xiaoming; … - In: Renewable Energy 63 (2014) C, pp. 519-523

, specific heat and density, of the graphene-dispersed nanofluids based on the ionic liquid 1-hexyl-3-methylimidazolium …-to-high-temperature applications. The specific heat and density of the graphene-dispersed nanofluids exhibit a slight decrease as compared with those … conductivity of the nanofluid containing graphene of as low as 0.06 wt% increases by 15.2%–22.9% as the tested temperature varies …

Persistent link: https://www.econbiz.de/10011044318

Synthesis and characterization of graphene-cobalt phthalocyanines and graphene-iron phthalocyanine composites and their enzymatic fuel cell application

Mani, Veerappan; Devasenathipathy, Rajkumar; Chen, Shen-Ming - In: Renewable Energy 74 (2015) C, pp. 867-874

We prepared graphene (GR)-cobalt phthalocyanine (CoPc) and GR-iron phthalocyanine (FePc) composites by simple and …/GR-FePc as anode and cathode respectively. The fabricated EFC offered a maximum power density of 23 μW cm−2 which is comparable …

Persistent link: https://www.econbiz.de/10011076873

Small wind turbines with timber blades for developing countries: Materials choice, development, installation and experiences

Mishnaevsky, Leon; Freere, Peter; Sinha, Rakesh; … - In: Renewable Energy 36 (2011) 8, pp. 2128-2138

The low cost wind turbines with timber blades represent a good solution for the decentralized energy production in off-grid regions of developing countries. This paper summarizes the results of investigations on the mechanical testing and choice of timber for wind blades, testing of different...

Persistent link: https://www.econbiz.de/10010804014

The effect of temperature and compression during pyrolysis on the density of charcoal made from Australian eucalypt wood

Somerville, Michael; Jahanshahi, Sharif - In: Renewable Energy 80 (2015) C, pp. 471-478

optimise substitution for coal and coke in specific applications. The density of charcoal is an important property to control …

Persistent link: https://www.econbiz.de/10011263762

Determination of the density and the viscosities of biodiesel–diesel fuel blends

Alptekin, Ertan; Canakci, Mustafa - In: Renewable Energy 33 (2008) 12, pp. 2623-2630

50 and B75) were prepared on a volume basis. The key fuel properties such as density and viscosities of the blends were … measured by following ASTM test methods. Generalized equations for predicting the density and viscosities for the blends were … values of the density and viscosities. According to the results, the density and viscosities of the blends increased with the …

Persistent link: https://www.econbiz.de/10010803722

Prediction models for density and viscosity of biodiesel and their effects on fuel supply system in CI engines

Tesfa, B.; Mishra, R.; Gu, F.; Powles, N. - In: Renewable Energy 35 (2010) 12, pp. 2752-2760

higher viscosity and density of biodiesel poses some acute problems when it is used it in unmodified engine. Taking this into … density and viscosity for a variety of biodiesels and also to develop a correlation between density and viscosity for these … biodiesels. The second objective is to investigate and quantify the effects of density and viscosity of the biodiesels and their …

Persistent link: https://www.econbiz.de/10010805134

Experimental study and empirical correlation development of fuel properties of waste cooking palm biodiesel and its diesel blends at elevated temperatures

Ebna Alam Fahd, M.; Lee, Poh-Seng; Chou, Siaw Kiang; … - In: Renewable Energy 68 (2014) C, pp. 282-288

In this experimental work, the density, dynamic viscosity and higher heating value of methyl ester based waste cooking … diesel fuel and pure biodiesel. Tests for dynamic viscosity and density were performed in the temperature range 0–130 °C for … pure biodiesel has the highest density and dynamic viscosity at a given temperature whereas it exhibits lowest combustion …

Persistent link: https://www.econbiz.de/10011044801