685_Frontiers of Thin Film Technology-Maurice H.Francombe

... integration into heterojunction silicon wafer solar cells and subsequently the modelling of heterojunction and hybrid heterojunction silicon wafer solar cells that utilize these films Three key ... monocrystalline/multicrystalline solar cells, thin- film solar cells, organic solar cells, tandem cells, concentrator cells and varying choice of mat...

Ngày tải lên: 09/09/2015, 11:15

... DEVELOPMENT AND FABRICATION OF THIN FILM COMPOSITE (TFC) MEMBRANES FOR ENGINEERED OSMOSIS PROCESSES HAN GANG (B.Sci.(Hons.),Dalian University of Technology, China) A THESIS SUBMITTED FOR ... Membrane Development for Engineered Osmosis Processes 32  2.4.4.1 Membranes for FO 33  2.4.4.2 Membranes for PRO 40  Reference 46  CHAPTER MEMBRANE FABR...

Ngày tải lên: 10/09/2015, 09:02

... bimaterial fracture studies of O'Day and Curtin (2005) to thin film interfacial fracture Lengthscale dependent plasticity, an important feature of plasticity in micrometer-sized films, naturally ... A DISCRETE DISLOCATION STUDY OF THIN FILM INTERFACIAL FRACTURE Chng Chia-K'ai Audrey (B Eng (Hons.), M Eng, NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF...

Ngày tải lên: 11/09/2015, 21:37

... case, the vibrational frequencies of m -WO3 are quite higher than these of o -WO3 And the reason is that parameters of crystalline structure of m -WO3 are smaller than that of o -WO3 or the force constant ... cm-1 of covalent bonds W – O, there is only one clear modification, comparing to Raman spectra of film on thinner ITO layers The only difference is a...

Ngày tải lên: 13/02/2014, 03:20

... 270–274 272 Table Relative resistance of the thin film fired in different atmosphere Žmeasured at 2008C Number Firing atmosphere Kind of thin film Kind of measuring gas Relative resistance 1a 1H 2a ... al., Gas sensing properties of platinum dispersed- TiO2 thin film derived from precursor, Sens Actuators, B 62 Ž2000 55–60 w13x M Egashira, Y Shimizu, Y Tak...

Ngày tải lên: 19/03/2014, 16:48

... Response time (T1 ) and recovery time (T2 ) of sensors based on PANI/ TiO2 thin films prepared at 0, 10 and 20 ◦ C when exposed to NH3 of various concentrations at room temperature Concentration ... absorbance wavelengths of PANI/ TiO2 thin films prepared at different polymerization temperature Polymerization temperature (◦ C) Fig FTIR spectra of pure PANI an...

Ngày tải lên: 20/03/2014, 13:04

... spread out between adjacent grains is increased by oxidizing vapours and decreased in the opposite case [6–8], that implies a variation of resistivity in the same way Since 1980, many authors have ... polycrystalline layer made up of grains which have a great disparity of shape and size In this work, the grains are supposed to be quasi-spherical, identical in size, and...

Ngày tải lên: 20/03/2014, 13:04

... could be formed during the process of interruption The prolongation of film growth on the “extra” interface involves a new nucleation of the metal oxide film, the formation and growth of a film ... of the sensors heavily depend on the conditions and methods used in their preparation [27–31] Since grain size is one of the key factors to enhance the gas sensing properties of...

Ngày tải lên: 20/03/2014, 13:05

... Selected-area electron diffraction patterns recorded on mesoporous WO3 that is characteristic of diffuse electron diffraction rings demonstrate that the walls of our material are made up of nanocrystallite ... lead to excellent sensing properties upon exposure to low concentration of NO2 in air at low temperatures and enabled the selective detection of NO2 and H2 gases...

Ngày tải lên: 20/03/2014, 13:07

... Morphology of WO3 thin films Thin films of WO3 could be derived from the WO3 ·2H2 O sol added with PEG (2 wt.%) by one time spin coating and calcination at 300 ◦ C for h Fig shows SEM images of the thin ... films of WO3 for NO2 sensing, Sens Actuators B 95 (2003) 258 Conclusions Biographies An aqueous sol of WO3 ·2H2 O, added with PEG, could be applied successfull...

Ngày tải lên: 20/03/2014, 13:11

... calculated quantities, Thin Solid Films 313314 (1998) 33 [6] R Swanepoel, Ellipsometry data for some thin film samples, J Phys E: Sci Instrum., 16 (1983) 1215 [7] Jobin-Yvon, Horiba Group Ellipsometry ... conditions (e.g the angle of polarization mirrors and modulators) and parameters of film (∆, Ψ) The measurement configuration is chosen for the purpose of simplifying the c...

Ngày tải lên: 28/03/2014, 13:20

... – – – – Amorphous Amorphous Amorphous Amorphous Amorphous Amorphous Amorphous Amorphous Amorphous Crystalline Amorphous Amorphous Amorphous Amorphous Y. S Jung et al / Thin Solid Films 445 (2003) ... using the gases of smaller mass such as He w35x Employing the explanation to this study, in the case of using Ne gas, which has smaller mass, sputtered species dire...

Ngày tải lên: 24/05/2014, 13:53

... people at high risk of AD According to the established hypotheses on AD during the past decade, the extracellular deposits of beta- amyloid [A ] peptides forming plaques and the intracellular neurofibrillary ... surface, so the sensing area was placed in the middle of the well as shown in Figure 2a After washing three times with phosphate-buffered saline, laminin as an extrace...

Ngày tải lên: 20/06/2014, 20:20