The emission peak was obtained (370 nm) in UV region due to near band edge (NBE), and this endorsed the recombination of electrons and holes in SnO 2 structure [16]. A slight shift towards lower ...

Thus, the FTIR spectra confirmed that the Sn-O bonds and OH groups resulting from the phase transformation of Sn(OH) 2 to SnO 2 are not yet completely present in all cases [20, 21]. No significant ...

1993年1月1日 · Auger parameter data may also prove useful for distinguishing between various tin compounds on surfaces. Thus, in addition to core level spectra, valence band and x-ray excited Auger spectra for SnO 2 are presented. Data were obtained with a Perkin-Elmer Physical Electronics model 5600 photoelectron spectrometer using monochromatic radiation.

2023年7月28日 · (a) FTIR spectra of 200 ALD cycles of SnO 2, corresponding to 24 nm, grown directly on the perovskite absorber and on a c-Si substrate. The vibrational modes belonging to the removal of FA + (negative peaks), the inclusion of methyl groups from TDMA-Sn ligands, and the trapped sym -triazine (positive peaks) are assigned.

The patterns can be indexed according to the tetragonal rutile structure of SnO 2 with lattice constants of a = 4.712 A and c = 3.215 A, which is consistent with the standard values of bulk SnO 2 ...

1999年1月1日 · IR spectra were collected in a Nicolet Fourier Transform spectrometer with the sample diluted in a KBr pellet. The spectra of the crystalline SnO 2 particles were interpreted by using the commonly called `effective medium theory' (EMT), which is described in detail in refs. 8, 9.According to this theory four parameters determine the spectral features: the optical constants of the solid, the ...

2023年10月15日 · Surface chemistry of SnO 2 films. a,b) XPS spectra of SnO 2 films before and after washing with DI-water a) wide survey scan and b) K 2p core level region; c) schematics of the deposition of SnO 2 nanoparticles on the substrate and the washing process with DI-water; d) FTIR transmittance spectra the carboxylate bands absorption region of the ...

2022年12月12日 · Moreover, we employed operando X-ray absorption spectroscopy to study the evolution of the oxidation state and local coordination environment of SnO 2 under working conditions. In addition to the observed shifts of the rising edge of Sn K-edge X-ray absorption near-edge structure spectra to a lower energy side as the applied voltage decreases ...

2013年12月5日 · Highly transparent polycrystalline thin film of SnO 2 (tin dioxide) was deposited using a simple and low cost spray pyrolysis method. The film was prepared from an aqueous solution of tin tetrachloride (stannic chloride) onto glass substrates at 400 °C.A range of diagnostic techniques including X-ray diffraction (XRD), UV–visible absorption, atomic force microscopy (AFM), scanning electron ...

2017年10月31日 · The Raman spectra of SnO 2 nanoparticles were recorded by employing the Raman spectroscopy equipped with a 532 nm laser. High-resolution transmission electron microscopy (HRTEM, Tecnai™G2 F30, FEI, US) was used to investigate the morphologies. X-ray photoelectron spectroscopy (XPS) analysis was carried out on a PHI-5702 spectrometer.