Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Cu2ZnSn(S, Se)4(CZTSSe) shows broad and asymmetric photoluminescence spectra situated far below the absorption edge at low temperatures. The physical recombination paths for the observed transitions could not be assigned unambiguously yet in literature. Nevertheless we show in this contribution that the peak position…
We present a novel method for depositing crystalline cadmium telluride (CdTe) thin films from aqueous solutions. The films were deposited via a spin-coating technique by direct conversion alternating layers of Cd and Te precursor solutions. Powder x-ray diffraction (XRD) patterns and scanning electron microscopy (SEM)…
We have developed very thin silicon nano-walls with a view to applying them to wide bandgap silicon solar cells. Employing nanoimprint lithography, anisotropic wet etching, and oxidation techniques, we formed a nano-wall array on silicon wafers. The width and height of the walls fabricated were several nm and about 1…
Thin film solar cells with Cu(In, Ga)Se2(CIGSe) absorbers prepared by co-evaporation reach efficiencies above 21% [1]. Typical multi-stage co-evaporation chambers are MBE-like (ultra-)high vacuum systems with individual effusion sources for each element. Cleanliness of the process chamber and the background pressure d…
Poly-crystalline CdTe-based thin film photovoltaic (PV) devices are the forerunners in commercialized solar cell technology. Despite the commercial success, best laboratory cells achieve ~21.5% power conversion efficiency and hence are still ~10% short of theoretical limit. In this collaborative research project we in…
Na-containing surface compounds is likely to form during the formation of CZTS absorber. Still, the understanding of any potential influence on buffer layer growth and device performance is limited. In this work, we observed that NaxS compound can possibly form on the CZTS surface after annealing, and negatively affec…
Aluminum oxide (Al2O3) film by atomic layer deposition (ALD) is known to supply excellent surface passivation properties on crystalline Si surface. In this study, 10 nm Al2O3film was deposited on crystalline silicon by plasma-assisted atomic layer deposition (PAALD). To optimize concentration of hydrogen in Al2O3film,…
Spatial heterogeneities in the chemical makeup of thin film photovoltaic devices are pivotal in determining device efficiency. In this study, the presence of chlorine is identified in perovskite films synthesized with Cl-containing precursors by means of nanoprobe X-ray fluorescence (Nano-XRF). Additionally, a spatial…
In the present study, we develop a contactless optical characterization tool that quantifies and maps the trapping defects density within a thin film photovoltaic device. This is achieved by probing time-resolved photoluminescence and numerically reconstructing the experimental decays under several excitation conditio…
Three different novel liquid phosphorus dopant sources, based on a combination of phosphoric acid (H3PO4) and phosphorus pentoxide (P2O5), were spin-coated onto p-type crystalline silicon wafers. Heat treatment under an ambient atmosphere has been carried out at 925oC for 30 min in order allowing P diffusion into the…
National audience
We propose a novel idea to utilize environment pollutant cigarette ash for energy storage material as electrode of supercapacitors as supercapacitors can deliver high power and reasonable energy densities as compared to batteries which deliver energy as a result of chemical reactions and suffer with low power densitie…
The optical detonator's cup, performing selective sensitivity to laser radiation, was suggested. The cup is based on the secondary explosive PETN, which contains cobalt nanoparticles. The optimal nanoparticles' size was estimated using hot-spot model of laser initiation. The critical energy density for the suggested e…
Получены композитные циркономолибдатные сорбенты различного состава путем \nагломерации слоистого циркономолибдата с гелем SiO2 с последующим нанесением на \nнеорганическую композицию бис-(2,4,4-триметилпентил)-фосфината натрия (Cyanex 272). \nИзучены сорбционные свойства двух композиций в отношении катионов Nd3+ как…
The purpose of this study was to develop a techique to generate on-board volumetric cine-magnetic resonance imaging (VC-MRI) using patient prior images, motion modeling, and on-board 2-dimensional cine MRI.One phase of a 4-dimensional MRI acquired during patient simulation is used as patient prior images. Three major…
Effects of grinding-induced grain boundary and interfaces on electrical transportation and structure phase transition in ZnSe under high pressure* , Yang, Jie, Wang, Pei, Zhang, Guo-Zhao, Zhou, Xiao-Xue, Li, Jing, Liu, Cai-Long
. Zn 2- 2- , . . 2
In a district heating and cooling system, various types of production facilities are used to produce hot steam water. These facilities include peak load boilers, incinerators and combined heat and power platns to name a few. Each production facility has their own operation characteristics. Peak load boilers are expens…
Изучен процесс жидкофазной конденсации н-пентанола в неполярных средах, а также в \nотсутствие растворителя на металлах платиновой группы (платина, палладий, иридий, \nрутений и родий), нанесенных на мезопористый углеродный носитель сибунит, а также \nоксиды металлов с различными кислотно-основными свойствами – алюмин…
Many graph theoretical parameters have been used to describe the vulnerability of communication networks, including toughness, binding number, rate of disruption, neighbor-connectivity, integrity, mean integrity, edgeconnectivity vector, l-connectivity and tenacity. In this paper we discuss Integrity and its propertie…