Laser chemical processing (LCP) of poly silicon thin film
Laser chemical processing (LCP) of poly silicon thin film
... 1.1 Thin film solar cells …………………………………………… 1.2 Doping of poly- silicon thin films……………………………… 1.3 Application of Nd:YAG laser – a literature review …………… 1.4 Laser Chemical Processing (LCP) ………… ... LASER CHEMICAL PROCESSING (LCP) OF POLY- SILICON THIN FILM SELVEN VIRASAWMY (B Eng M Eng, NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOS...
Post crystallisation treatment and characterisation of polycrystalline silicon thin film solar cells on glass
... POST- CRYSTALLISATION TREATMENT AND CHARACTERISATION OF POLYCRYSTALLINE SILICON THIN- FILM SOLAR CELLS ON GLASS HIDAYAT (B Eng (Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY ... Fabrication and Characterisation of Polycrystalline Silicon Thin- film Solar Cells 2.1 Background and Current Status 2.2 Challenges for the Pro...
new technology of metal oxide thin film preparation for chemical sensor application
... 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...
Báo cáo hóa học: " Formation of silicon nanodots via ion beam sputtering of ultrathin gold thin film coatings on Si" pot
... Position is plotted vertically along the sample where one region has a 20-nm Au film (top of Figure 1) and the bottom region only Si (c-d) SEM images corresponding to the postirradiation condition ... concentration of gold in the sample during irradiation as a function of fluence after LEISS and XPS quantification The plot of relative concentration (% Au) versus fluence displays t...
Investigation of advanced light trapping concepts for plasma deposited solid phase crystallised polycrystalline silicon thin film solar cells on glass
... INVESTIGATION OF ADVANCED LIGHT TRAPPING CONCEPTS FOR PLASMA- DEPOSITED SOLID PHASE CRYSTALLISED POLYCRYSTALLINE SILICON THIN- FILM SOLAR CELLS ON GLASS YING HUANG (M.Sc., ... removal of the reaction product, is a promising light trapping method for the poly-Si on glass thin- film PV technology To achieve good light trapping for poly-...
influence of polymerization temperature on nh3 response of pani tio2 thin film gas sensor
... 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...
Báo cáo "Investigation of zinc oxide thin film by spectroscopic ellipsometry " ppt
... 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...
Interface studies for microcrystalline silicon thin film solar cells deposited on TCO coated planar and textured glass superstrates
... µc-Si:H thin- film solar cells deposited on TCO- coated planar glass superstrates 45 4.1 Establishing a baseline for thin- film µc-Si:H solar cells at SERIS: No buffer layer (reference cells) ... Abstract: An interface optimization for microcrystalline silicon (µc-Si:H) thin- film solar cells on glass superstrates is undertaken, focusing on...
Iron catalytic growth of prism shaped single crystal silicon nanowires by chemical vapor deposition of silane
... al / Chemical Physics Letters 411 (2005) 198–202 201 Fig TEM images of silicon nanostructures growth by different pyrolysis time of silane (a) a triangle -shaped silicon tip grown on a CNT by 30-min ... conclusion, by chemical vapor deposition of silane, the large-scale SiNWs were grown under the catalysis of Fe particles at the lower temperature – 450 °C These...
measurement of solid liquid interface temperature during pulsed excimer laser melting of polycrystalline silicon films
... fluence of 0.95 J/cm2͒ causes the measured temperature to be approximately 40 K higher than the actual interface temperature The maximum solid liquid interface temperatures at different laser fluences ... the laser fluence However, when the laser fluence is higher than 0.65 J/cm2, the maximum interface temperature does not increase with the laser fluence The effect of a...
temporal profile of optical transmission probe for pulsed laser heating of amorphous silicon films
... histories for these fluences The peak temperature occurs approximately at a time of 15 ns The temperature profiles across the thickness of the silicon layer are shown in Fig for a laser fluence, ... Surface temperature histories for a 0.2 pm-thick amorphous silicon layer, irradiated with an excimer laser (A=O.248 pm) for laser fluences F= 19.6,31.6,46.6 mJicm’ The las...
Báo cáo hóa học: " Synthesis of magnetic nanofibers using femtosecond laser material processing in air" ppt
... results in increasing the number of pulses and hence decreases size of the generated magnetic nanofibers Increasing repetition rate of the femtosecond laser results in generating smaller size magnetic ... magnetic nanofibers The magnetic strength of the generated nanofibers can be controlled by changing the repetition rate of the femtosecond laser These ma...