ZnO/CdTe and ZnO/CdS core-shell nanowire arrays for extremely thin absorber solar cells

Salazar, Raul; Delamoreanu, A.; Lévy‐Clément, C.; Ivanova, Valentina

doi:10.1016/j.egypro.2011.10.164

Cited by 28 publications

(19 citation statements)

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“…But low photoenergy conversion efficiency of ZnO (probably because of their relatively low charge separation efficiency and fast recombination of charge carriers) (Tamaki et al 2009) forced many scientists to improve the photocatalytic efficiencies in ZnO by suppression of the recombination of photogenerated electron-hole pairs. Such examples include SnO 2 /ZnO, ZnO/In 2 O 3 , Pt/ZnO, ZnO/ZnS, Bi 2 S 3 /ZnO, ZnO/ CdS , CdS/CdSe (Murugadoss 2012), ZnO/ CdS (Sahi and Chen 2013), CeF 3 /ZnO (Salazar et al 2011), ZnO/CdTe and ZnO/CdS (Shirakata 2013), ZnO/CdS/Cu(In, Ga)Se 2 (Chang et al 2013), ZnO/CuO (Tamez et al 2012), SnO 2 -ZnO , CdS/ZnO (Dongguang et al 2012), Ag/ZnO-C (Yu et al 2013), Pt-ZnO (Zhang et al 2012), and CdS/CdSe (Song et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Hierarchical nanostructures of Au@ZnO: antibacterial and antibiofilm agent

Gholap

Warule²,

Sangshetti³

et al. 2016

Appl Microbiol Biotechnol

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The perpetual use of antibiotics against pathogens inadvertently altered their genes that have translated into an unprecedented resistance in microorganisms in the twentyfirst century. Many researchers have formulated bactericidal and bacteriostatic inorganic nanoparticle-based antiseptics that may be linked to broad-spectrum activity and far lower propensity to induce microbial resistance than organic-based antibiotics. Based on this line, herein, we present observations on microbial abatement using gold-based zinc oxide nanostructures (Au@ZnO) which are synthesized using hydrothermal route. Inhibition of microbial growth and biofilm using Au@ZnO is a unique feature of our study. Furthermore, this study evinces antimicrobial and antibiofilm mechanisms of photo-eradiated Au@ZnO by disruption of cellular functions and biofilms via reactive oxygen species (ROS)-dependent generation of superoxide anion radical. The present study is significant as it introduces novel functionalities to Au@ZnO in the biomedical field which can be extended to other species of microbial pathogens.

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Section: Introductionmentioning

confidence: 99%

Hierarchical nanostructures of Au@ZnO: antibacterial and antibiofilm agent

Gholap

Warule²,

Sangshetti³

et al. 2016

Appl Microbiol Biotechnol

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“…Even if the same deposition parameters are used as for CdTe thin fihns solar cells, the atoms might not have enough kinetic energy to diffuse along the entire surface area of the nanowires [9]. This represents a limiting factor for fabricating a uniform thin fihn on the nanowires surface regarding the height, diameter, density and the tilt of the nanowires in order to avoid the shadowing effects.…”

Section: A Znoiabsorber Nanostructurementioning

confidence: 99%

Low cost fabrication of semiconducting materials for photovoltaic applications

Salazar

Sanchez

Rouchon

et al. 2012

2012 International Semiconductor Conference Dresden-Grenoble (ISCDG)

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The present study is divided in two parts. In the first part, the electrochemical deposition of ZnO 2D layers and nanowires and their photosensitization with extremely thin absorbing layers of CdS, CdTe, CuInS2 (CIS) and CU2ZnSnS4 (CZTS) is discussed. The photosensitizing semiconductors are prepared by close space sublimation (CSS, used for CdTe deposition), Successive Ionic Layer Adsorption and Reaction (SILAR) and electrodeposition techniques. It is shown that the SILAR method appears as very suitable for the formation of very thin and uniform films around ZnO nanowires and only few SILAR deposition cycles are enough to achieve good absorbance in the visible spectral wave range. In the second part the integration of these materials in extremely thin absorber (eta) and hybrid solar cells is presented. In this part is also discussed the electrochemical deposition of CuSCN which is used in these photovoltaic devices as hole transporting layer. Our results clearly show that the integration of electrodeposited ZnO 2D layers improves considerable the stability of inverted polymeric solar cells.

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“…5,6 Different deposition techniques like: Chemical Bath Deposition (CBD), QD functionalization, Close Space Sublimation (CSS), Successive Ion Layer Adsorption and Reaction (SILAR), Metal Organic Chemical Vapor Deposition (MOCVD), Vapor Phase Epitaxy (VPE), and electrophoretic deposition (EPD) have been used to deposit the absorber layer onto mesoscopic oxide (e.g., TiO 2 ) lms. 3,4,7 QDSSCs typically exhibit lower power conversion efficiency when comparable to DSSCs or thin lm solar cells, however, their efficiency has considerably increased from 1% to over 8%. Factors that limit the overall power conversion efficiency is the limited harvesting of the incident light, slow hole transfer rate, back electron transfer to the redox couple, or low counter electrode performance.…”

Section: Introductionmentioning

confidence: 99%