Photophysics, photoelectrical properties and photoconductivity relaxation dynamics of quantum-sized bismuth(III) sulfide thin films

Semiconducting In2S3 quantum dots in thin film form: sonochemical versus conventional chemical synthesis and investigation of their structural and optical properties

“…The values for θ and β obtained from the interpolation procedure were then used in Eq. (7). In order to take into account the influence of the instrumental factors on the broadening of XRD peaks, and therefore on the calculated average crystal radius, the following procedure was adopted.…”

“…In the case of both methods, standard microscope glasses were used as substrates. In order to improve the adhesion properties and to enable deposition of strongly adherent layers, prior to deposition the substrates were immersed in a diluted solution of tin(II) chloride (ω(SnCl 2 ) = 0.03%) for about twenty minutes and subsequently washed with deionized water and dried at ≈ (200-220) • C. As discussed in our previous studies [3][4][5][6][7][8], such pre-deposition treatment leads to formation of stochastically distributed small crystals of tin(II) oxide on substrate surface. These crystals act as nucleation centers during the deposition, initiating the heterogeneous nucleation processes.…”

“…A wide band-gap semiconducting compound In 2 S 3 has been shown to be very suitable for this purpose [1,2]. Continuing our research in the field of nanocrystalline semiconductors deposited in thin-film form [3][4][5][6][7][8], we report in the present paper the methods developed for conventional chemical and sonochemical synthesis of In 2 S 3 nanocrystals as continual thin films. We also study the structural and optical properties of the synthesized materials and their evolution upon post-deposition thermal treatment.…”

The effects of coumarin additive on the properties of CdS thin films grown by chemical bath deposition

“…On the basis of solid-state theory of semiconductors [31,32], the temperature dependency of dark electrical resistance of a semiconductor with one or more impurity levels can be given by…”

Microwave Assisted Preparation of Bismuth Oxyhalide Microflowers Comprised of Nanolayers and Investigation of its Photocatalytic Activity

“…The band gap of BiOX is strictly dependent on the halide participated in its composition and ranges from 3.19-3.44, 2.64-2.91 and 1.77-1.92 eV, respectively for Cl, Br and I [2]. In this field, so far, researchers have also investigated photocatalytic activities of various bismuth compounds such as: Ag/AgI/BiOI [3], Bi2S3 [4], Bi2Ti2O7 [5], N-doped (BiO)2CO3 [6], Bi5O7NO3 [7], BiOI [8], Bi2O3, BiVO4, Bi2WO6 [9,10], BiNbO4 and BiTaO4 [11] and Black BiOCl [12]. Among different ternary bismuth based photocatalysts, bismuth oxyhalides (BiOX) have captivated the interest of researchers enormously.…”