Near-infrared photoactive Cu3BiS3 thin films by co-evaporation

Abstract

Investigation of combinatorial coevaporated thin film Cu2ZnSnS4. I. Temperature effect, crystalline phases, morphology, and photoluminescence Semiconducting Cu 3 BiS 3 (CBS) thin films were deposited by co-evaporation of Cu, Bi elemental metallic precursors, with in situ sulphurisation, using a quartz effusion cell. Cu 3 BiS 3 thin films were structurally characterized by XRD and FE-SEM. The chemical bonding of the ions was examined by XPS. As deposited films were demonstrated for metal-semiconductor-metal near IR photodectection under lamp and laser illuminations. The photo current amplified to three orders and two orders of magnitude upon the IR lamp and 60 m W cm À2 1064 nm IR laser illuminations, respectively. Larger grains, made up of nano needle bunches aided the transport of carriers. Transport properties were explained based on the trap assisted space charge conduction mechanism. Steady state detector parameters like responsivity varied from 1.04 AW À1 at 60 m Wcm À2 to 0.22 AW À1 at 20 m Wcm À2 . Detector sensitivity of 295 was found to be promising and further could be tuned for better responsivity and efficiency in utilization of near infra-red photodetector. V C 2014 AIP Publishing LLC. [http://dx.

A comprehensive review on synthesis and characterizations of Cu3BiS3 thin films for solar photovoltaics

“…However, the progress of chemical methods suitable for the synthesis of a ternary Cu 3 BiS 3 still remains a major challenge. The wide range of techniques that have been employed to prepare Cu 3 BiS 3 semiconductor material had been reviewed with the hope of distinguishing new [43,57]; nanosheets (c) [42]; nanorods (d, e) [37,47]; dendrites (f) [56]; flower-like hierarchical (g) [38]; corallike (h) [60]; bent-like nanorods (i) [39]; spherical nanoparticles (j) [55]; nanoneedle-like (k) [29] and 3D flower-like ball (l) [45] morphologies of Cu 3 BiS 3 paths for productive research based on the present author's work.…”

“…In Cu 3 BiS 3 semiconductor, these three trapping levels may be associated with the presence of structural defects and unintentional impurities. Thereafter, Murali et al [29] in 2014 reported the deposition of Cu 3 BiS 3 thin films by co-evaporation of the Cu, Bi elemental precursors on a Mo-glass substrate with in situ sulfurization using a quartz effusion cell. irrespective of the Cu/Bi mass ratio.…”

“…Numerous evaporation methods such as coevaporation, fast evaporation, thermal evaporation, and electron beam (EB) [21][22][23][24][25][26][27][28][29][30][31][32] have been employed for the deposition of Cu 3 BiS 3 thin films. Cu 3 BiS 3 thin films were deposited using two different attitudes:…”

Hydrophilic Cu3BiS3 Nanoparticles for Computed Tomography Imaging and Photothermal Therapy

“…[ 24,33,34 ] Several methods have been reported for the synthesis of Cu 3 BiS 3 nanomaterials, including solvothermal route, [ 35,36 ] cyclic microwave radiation, [ 37 ] and coevaporation. [ 38,39 ] There are few papers reporting the synthesis of Cu 3 BiS 3 nanostructures using thermal decomposition of precursor complexes. Here, hydrophobic Cu 3 BiS 3 NPs were synthesized by the thermal decomposition of Cu(S 2 CNEt 2 ) 2 and Bi(S 2 CNEt 2 ) 3 precursors in oily mixed solvent and then the produced Cu 3 BiS 3 NPs were coated with amphiphilic polyvinylpyrrolidone (PVP) through the ligand exchange.…”

Photothermal Theragnosis Synergistic Therapy Based on Bimetal Sulphide Nanocrystals Rather Than Nanocomposites

“…Ternary semiconductor nanomaterials are able to inherit the properties from their parent binary materials . Copper bismuth sulfide (CBS) (such as Cu 3 BiS 3 , Cu 4 BiS 4 , and CuBiS 2 ) nanostructures are usually p‐type semiconductors; thus, these nanomaterials may have many copper vacancies and exhibit the NIR absorption as with self‐doped copper chalcogenides, and CBS nanostructures have the potential to be used as CT contrast agents, similar to Bi 2 S 3 nanostructures, which have been widely studied as CT contrast agents due to the large X‐ray attenuation coefficient of bismuth . Consequently, CBS nanostructures can theoretically show both the NIR response and imaging response.…”