surface engineering of zno nanostructures for semiconductor sensitized solar cells

... smaller than that of the members of prism-like series due to their more intensive visible emission 3.3 Humidity sensing property of nanocomposites The humidity sensing of ZnO and ZnO nanocomposite ... raspberry-like ZnO and ZnOAIn(OH)3 Table Optical properties of ZnO and ZnO nanocomposite samples Sample Eg (eV) Prism-like ZnO ZnOAIn(OH)3 at.% In(III) ZnOA...

Ngày tải lên: 06/05/2014, 13:24

... nanostructures because of the reduction of the semiconductor surface damage This FIB- milling process extends the ability of the technology to fabricate plasmonic and other nanostructures on substrates ... highresolution capabilities of the ion-beam-based techniques Reducing the amorphisation of the substrate results in over sevenfold increase of the o...

Ngày tải lên: 20/06/2014, 22:20

... wall of the flask A high yield (0.8 g ZnO nanowires) of the product was achieved Figure 1b presents a typical SEM image of the ZnO nanowires It shows a general view of the morphology of the nanowires ... size uniformity of the prepared ZnO nanowires was investigated by studying the diameter distribution of the nanowires The diameters of the prepared ZnO nanow...

Ngày tải lên: 20/06/2014, 22:20

... processing of large-scale graphene Nat Nanotech 2009, 4:25-29 doi:10.1186/1556-276X-7-53 Cite this article as: Kim et al.: Fabrication and characterization of carbon-based counter electrodes prepared by ... graphene, SWNTs, and graphene-SWNT composites could perform sufficiently well as counter electrodes for DSSCs Figure Nyquist plot of DSSCs Nyquist plot of D...

Ngày tải lên: 20/06/2014, 23:20

... this article as: Chen et al.: Improved conversion efficiency of Ag2S quantum dot-sensitized solar cells based on TiO2 nanotubes with a ZnO recombination barrier layer Nanoscale Research Letters ... efficiencies of as-prepared Ag2S quantum dot-sensitized solar cells, the Figure The photoconversion efficiencies of the Ag2S( 8) /ZnO/ TNT and Ag2...

Ngày tải lên: 21/06/2014, 01:20

... of 3D changes produced by the atomic mobility To check a possible gold catalytic effect of the ZnO growth on gold, this was carried out for 2, and 10 nm thin gold thicknesses The morphology of ... hand, the ZnO structures grown on the 4-nm thickness gold are ‘XRD amorphous’ Conclusions In summary, experiments addressing a possible catalytic effect of gold on ZnO growth...

Ngày tải lên: 21/06/2014, 02:20

... processing of large-scale graphene Nat Nanotech 2009, 4:25-29 doi:10.1186/1556-276X-7-53 Cite this article as: Kim et al.: Fabrication and characterization of carbon-based counter electrodes prepared by ... graphene, SWNTs, and graphene-SWNT composites could perform sufficiently well as counter electrodes for DSSCs Figure Nyquist plot of DSSCs Nyquist plot of D...

Ngày tải lên: 21/06/2014, 17:20

... Increases in solar conversion efficiencies of the ZrO2 nanofiber-doped TiO2 photoelectrode for dye-sensitized solar cells Jiao Wang1, En Mei Jin1, Ju-Young Park2, Wan Lin Wang1, Xing Guan ... surface and the wt.% ZrO2 nanofiberadded TiO2 film's surface In the ZrO2 nanofiber-added TiO2 film in Figure 2b, the ZrO2 nanofiber was shown at the surf...

Ngày tải lên: 21/06/2014, 17:20

... interface of ZnO nanocombs and TCO [RZnO/TCO], is the capacitance of accumulation (of e-) layer of the ZnO nanocombs [CACC] and CSC space charge capacitance 123 1008 TCO (RZnO/TCO), the capacitance of ... efficiency of *0.68% with a fill factor of 34%, short-circuit current of 3.14 mA/cm2 and open-circuit voltage of 0.671 V This research opens a new way to utilize various k...

Ngày tải lên: 21/06/2014, 20:20

... a direct localization of buried nanostructures even at cap layer thickness as large as 100 nm Different experiments, based on the nucleation of new nanostructures at the top surface of 25- and ... situation when 1.6 ML of InAs is deposited on the surface With this amount of InAs, besides the QD formed at the top of the mounds, we observe QD decorating the sidewalls of th...

Ngày tải lên: 22/06/2014, 00:20

... 0.86–1.02% by introducing the TiO2 blocking layer The increase in Isc can be attributed to the increase in the aspect ratio of the nanowire arrays with and without the TiO2 blocking layer from ... spincoating, resulting in the maximum loss of Voc (about 40 mV) In order to further investigate the effect of a TiO2 buffer layer on the performance of ZnO nanowire-...

Ngày tải lên: 22/06/2014, 00:20

... insignificant growth of 3T3 cells This is likely due to the reduced opportunity for the cells to integrate on the smooth surface Surface Engineering of Titania 44 The excellent integration of 3T3 cells, ... micrograph of TiO2 thin film Figure 5: AFM surface topography and roughness for TiO2 thin films Surface Engineering of Titania 42 Figure 6: X-ray diffraction...

Ngày tải lên: 07/08/2014, 14:20

... Scope of topics forming the concept of surface engineering References Development of surface engineering 2 .1 History of development of surface engineering 2 .1. 1 General laws of development 2 .1. 2 ... technological surface layers 1. 1 .1 Mechanical techniques 1. 1.2 Thermo-mechanical techniques 1. 1.3 Thermal techniques 1. 1.4 Thermo-chemical techniques 1....

Ngày tải lên: 10/08/2014, 12:21

... based on the ZnO/ QW and ZnO/ HJ solar cells: pink hatched region indicates the photoconversion improvement from ZnO/ HJ to ZnO/ QW D) Nyquist plots of ZnO/ HJ and ZnO/ QW solar cells at 0.8 V forward bias ... steps: i) growth of ZnO nanowires arrays on TCO substrates, ii) deposition of a ZnO seeding layer on the ZnO nanowire surface, and iii) growth of branched na...

Ngày tải lên: 05/03/2015, 14:37

... NANOSTRUCTURED METAL- OXIDE MATERIALS FOR DYE- SENSITIZED SOLAR CELLS Shweta Agarwala (M.Sc, Nanyang Technological University, Singapore) A THESIS SUBMITTED FOR THE DEGREE OF ... …………………………………………………………… … 31 1.6 Stability of dye- sensitized solar cell ……………………………….… ……………… 32 1.7 Solid-state dye- sensitized solar cell …………………………… …………… …… 34 iii 1.8 Dye- sensitiz...

Ngày tải lên: 10/09/2015, 15:49