scholarly journals Deposition routes of Cs2AgBiBr6 double perovskites for photovoltaic applications

MRS Advances ◽  
2018 ◽  
Vol 3 (32) ◽  
pp. 1819-1823 ◽  
Author(s):  
Martina Pantaler ◽  
Christian Fettkenhauer ◽  
Hoang L. Nguyen ◽  
Irina Anusca ◽  
Doru C. Lupascu
Keyword(s):  
Thin Films ◽  
Spin Coating ◽  
Perovskite Phase ◽  
Perovskite Solar Cells ◽  
Double Perovskite ◽  
Double Perovskites ◽  
Sequential Deposition ◽  
Absorber Material ◽  
Photovoltaic Applications ◽  
Deposition Processes

ABSTRACTThe lead free double perovskite Cs2AgBiBr6 is an upcoming alternative to lead based perovskites as absorber material in perovskite solar cells. So far, the majority of investigations on this interesting material have focused on polycrystalline powders and single crystals. We present vapor and solution based approaches for the preparation of Cs2AgBiBr6 thin films. Sequential vapor deposition processes starting from different precursors are shown and their weaknesses are discussed. Single source evaporation of Cs2AgBiBr6 and sequential deposition of Cs3Bi2Br9 and AgBr result in the formation of the double perovskite phase. Additionally, we show the possibility of the preparation of planar Cs2AgBiBr6 thin films by spin coating.

Bismuth-Antimony mixed double perovskites Cs2AgBi1-xSbxBr6 in solar cells

MRS Advances ◽  
2019 ◽  
Vol 4 (64) ◽  
pp. 3545-3552
Author(s):  
Martina Pantaler ◽  
Selina Olthof ◽  
Klaus Meerholz ◽  
Doru C. Lupascu
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Double Perovskite ◽  
Mixed System ◽  
Double Perovskites ◽  
Solar Cell Performance ◽  
Absorber Material ◽  
Bismuth Antimony ◽  
Conversion Efficiencies

AbstractReported conversion efficiencies of lead based perovskite solar cells keep increasing steadily. But next to the demand for high efficiency, the need for analogue non-toxic material systems remains. One promising lead free absorber material is the double perovskite Cs2AgBiBr6. Interest in this and other double perovskites has been increasing in the last three years and several solar cells using different device structures have been reported. However, the efficiency of these solar cells is merely in the range of 2%. To further improve solar cell performance we prepared mixed bismuth-antimony double perovskite Cs2AgBi1-xSbxBr6 where different fractions of antimony (x=0.125, 0.25, 0.375, 0.50) are used. This was motivated by reports of lower bandgap values in these mixed system. After the optimization of preparation of these thin films, we have carefully analysed the effects on the structure, composition, electronic structure, as well as optical properties. Finally, we have fabricated Bi-Sb mixed double perovskite solar cells in a mesoscopic device architecture.

scholarly journals Aqueous-based Binary Sulfide Nanoparticle Inks for Cu2ZnSnS4 Thin Films Stabilized with Tin(IV) Chalcogenide Complexes

Nanomaterials ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 1382
Author(s):  
Han Wang ◽  
Amrita Yasin ◽  
Nathaniel Quitoriano ◽  
George Demopoulos
Keyword(s):  
Thin Films ◽  
Nanoparticle Synthesis ◽  
Economic Feasibility ◽  
Organic Ligands ◽  
Sulfur Vapor ◽  
Optical And Electronic Properties ◽  
Photovoltaic Applications ◽  
Deposition Processes ◽  
Czts Thin Films

Cu2ZnSnS4(CZTS) is a promising semiconductor material for photovoltaic applications,with excellent optical and electronic properties while boasting a nontoxic, inexpensive, andabundant elemental composition. Previous high‐quality CZTS thin films often required eithervacuum‐based deposition processes or the use of organic ligands/solvents for ink formulation,which are associated with various issues regarding performance or economic feasibility. To addressthese issues, an alternative method for depositing CZTS thin films using an aqueous‐basednanoparticle suspension is demonstrated in this work. Nanoparticles of constituent binary sulfides(CuxS and ZnS) are stabilized in an ink using tin(IV)‐based, metal chalcogenide complexes such as[Sn2S6]4‐. This research paper provides a systematic study of the nanoparticle synthesis and inkformulation via the enabling role of the tin chalcogenide complexing power, the deposition of highqualityCZTS thin films via spin coating and annealing under sulfur vapor atmosphere, theirstructural characterization in terms of nanocrystal phase, morphology, microstructure, anddensification, and their resultant optoelectronic properties.

scholarly journals Semiconducting Thin Films of CuSbS2

Quimica Hoy ◽  
2011 ◽  
Vol 2 (1) ◽  
pp. 4
Author(s):  
Sarah Messina ◽  
Paz Hernández ◽  
Yolanda Peña
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Solid State ◽  
Optical Band Gap ◽  
Deposition Technique ◽  
X Ray ◽  
Absorber Material ◽  
Photovoltaic Applications ◽  
P Type ◽  
Semiconducting Thin Films

In this paper we present a method to produce polycrystalline CuSbS2 thin ?lms through a solid-state reaction at 350 ºC and 400 ºC involving thin ?lm multilayer of Sb2S3 -CuS or Cu2-xSe by chemical bath deposition technique. The formation of the ternary compound was confirmed by X-ray di?raction (XRD). A direct optical band gap of approx. 1.57 eV anda p-type electrical conductivity of 10-3 (Ω•cm)-1 were measured. These optoelectronic characteristics show perspective for the use of CuSbS, as a suitable absorber material in photovoltaic applications.

scholarly journals Band Gap of Pb(Fe0.5Nb0.5)O3 Thin Films Prepared by Pulsed Laser Deposition

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6841
Author(s):  
Nicole Bartek ◽  
Vladimir V. Shvartsman ◽  
Houssny Bouyanfif ◽  
Alexander Schmitz ◽  
Gerd Bacher ◽  
...  
Keyword(s):  
Thin Films ◽  
Band Gap ◽  
Open Circuit ◽  
Ferroelectric Materials ◽  
Promising Candidate ◽  
Photovoltaic Efficiency ◽  
Absorber Material ◽  
Photovoltaic Applications ◽  
High Band ◽  
Ferroelectric Perovskite

Ferroelectric materials have gained high interest for photovoltaic applications due to their open-circuit voltage not being limited to the band gap of the material. In the past, different lead‑based ferroelectric perovskite thin films such as Pb(Zr,Ti)O3 (Pb,La)(Zr,Ti)O3 and PbTiO3 were investigated with respect to their photovoltaic efficiency. Nevertheless, due to their high band gaps they only absorb photons in the UV spectral range. The well-known ferroelectric PbFe0.5Nb0.5O3 (PFN), which is in a structure similar to the other three, has not been considered as a possible candidate until now. We found that the band gap of PFN is around 2.75 eV and that the conductivity can be increased from 23 S/µm to 35 S/µm during illumination. The relatively low band gap value makes PFN a promising candidate as an absorber material.

Additive-free spin coating of tin oxide thin films: synthesis, characterization and evaluation of tin β-ketoiminates as a new precursor class for solution deposition processes

2020 ◽  
Vol 49 (31) ◽  
pp. 10755-10764
Author(s):  
Niklas Huster ◽  
David Zanders ◽  
Sarah Karle ◽  
Detlef Rogalla ◽  
Anjana Devi
Keyword(s):  
Thin Films ◽  
Tin Oxide ◽  
Spin Coating ◽  
Oxide Thin Films ◽  
Solution Deposition ◽  
Deposition Processes

A series of tin(ii) β-ketoiminate complexes was synthesized and evaluated for the deposition of SnO2 films via additive free spin coating.

A Novel Preparation Method of CH3NH3PbI3 Thin Films for Perovskite Solar Cell

2018 ◽  
Vol 759 ◽  
pp. 54-58 ◽  
Author(s):  
Wei Liang Zhao
Keyword(s):  
Thin Films ◽  
Solar Cell ◽  
Spin Coating ◽  
Preparation Method ◽  
Power Conversion ◽  
Perovskite Solar Cell ◽  
Emission Peak ◽  
Deposition Method ◽  
Sequential Deposition

A novel two-step sequential deposition method is proposed for the preparation of CH3NH3PbI3 for perovskite solar cell. In order to increase the crystallinity of the PbI2 film, rapidly drop the anhydrous chlorobenzene to the center of the substrate at 6 seconds of spin coating. Ultimately, the quality of the CH3NH3PbI3 film is improved. Through the transmission spectrum of CH3NH3PbI3 thin films, it is clear to see the use of the additive reduces the transmittance of the film. The PL spectroscopy of CH3NH3PbI3 thin films dropping with different additives shows that CH3NH3PbI3 thin films all have an emission peak at 768nm. The J-V test curve of the perovskite solar cell shows that the use of the additive improves the power conversion efficiency.

OPTIMIZATION OF PROCESSING TEMPERATURE TO ACHIEVE HIGH QUALITY SOL–GEL-DERIVED PZT THIN FILM

2009 ◽  
Vol 08 (03) ◽  
pp. 299-303 ◽  
Author(s):  
SAJJAD DEHGHANI ◽  
ABDOLGHAFAR BARZEGAR ◽  
MOHAMMAD HOSSEIN SHEIKHI
Keyword(s):  
Thin Films ◽  
Spin Coating ◽  
Perovskite Phase ◽  
Sol Gel ◽  
Morphological Properties ◽  
Processing Temperature ◽  
High Quality ◽  
Pzt Thin Films ◽  
Polarization Voltage ◽  
Si Substrates

Ferroelectric PbZr 1-x Ti x O 3 (PZT) thin films have been extensively investigated because of their excellent piezoelectric, pyroelectric, ferroelectric, and dielectric properties. Sol–gel synthesis and spin-coating are popular routes to the formation of high quality, dense, and crack-free thin films. In this work, high quality, crack-free PZT thin films have been prepared by sol–gel method via spin-coating on Pt/Ti/SiO2/Si substrate by different temperature processings. The crystallographic and morphological properties of the films have been analyzed by X-ray diffraction and scanning electron microscopy. The electrical properties of thin films including the permittivity, loss tangent, and polarization–voltage hysteresis loop were measured and compared for different films. Finally, by optimizing temperature processing, highly textured and high quality films of PZT with perovskite phase were obtained on Pt/Ti/SiO2/Si substrates.

scholarly journals Spin Coating Immobilisation of C-N-TiO2 Co-Doped Nano Catalyst on Glass and Application for Photocatalysis or as Electron Transporting Layer for Perovskite Solar Cells

Coatings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1029 ◽  
Author(s):  
Emile Salomon Massima Mouele ◽  
Siphelo Ngqoloda ◽  
Sara Pescetelli ◽  
Aldo Di Carlo ◽  
Mihaela Dinu ◽  
...  
Keyword(s):  
Thin Films ◽  
Energy Harvesting ◽  
Spin Coating ◽  
Sol Gel ◽  
Perovskite Solar Cells ◽  
Volume Ratio ◽  
Tio2 Films ◽  
Wastewater Remediation ◽  
Nano Catalyst ◽  
Electron Transporting Layer

Producing active thin films coated on supports resolves many issues of powder-based photo catalysis and energy harvesting. In this study, thin films of C-N-TiO2 were prepared by dynamic spin coating of C-N-TiO2 sol-gel on glass support. The effect of spin speed and sol gel precursor to solvent volume ratio on the film thickness was investigated. The C-N-TiO2-coated glass was annealed at 350 °C at a ramping rate of 10 °C/min with a holding time of 2 hours under a continuous flow of dry N2. The C-N-TiO2 films were characterised by profilometry analysis, light microscopy (LM), and scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS). The outcomes of this study proved that a spin coating technique followed by an annealing process to stabilise the layer could be used for immobilisation of the photo catalyst on glass. The exposure of C-N-TiO2 films to UV radiation induced photocatalytic decolouration of orange II (O.II) dye. The prepared C-N-TiO2 films showed a reasonable power conversion efficiency average (PCE of 9%) with respect to the reference device (15%). The study offers a feasible route for the engineering of C-N-TiO2 films applicable to wastewater remediation processes and energy harvesting in solar cell technologies.

scholarly journals The Challenge of Ambient Air–Processed Organometallic Halide Perovskite: Technology Transfer From Spin Coating to Meniscus Blade Coating of Perovskite Thin Films

2021 ◽  
Vol 8 ◽  
Author(s):  
Patrick Wai-Keung Fong ◽  
Gang Li
Keyword(s):  
Thin Films ◽  
Technology Transfer ◽  
Spin Coating ◽  
Perovskite Solar Cells ◽  
Ambient Air ◽  
Small Areas ◽  
Halide Perovskite ◽  
The Impact ◽  
Shed Light ◽  
Blade Coating

The development of perovskite solar cells (PSCs) has been extensively studied in the past decade, and the power conversion efficiency (PCE) has reached a record of 25.2%. Despite impressively high PCE, the fabrication process mainly relied on a well-controlled environment, an inert gas–filled glovebox, and devices of small areas were demonstrated. This impedes the technology transfer from laboratory scale spin coating to manufacturing ambient air scalable processes. Furthermore, the nucleation and crystal growth processes of the perovskite thin films are different when the films are prepared in different environmental conditions. In this review, we summarize the recent advances of ambient air–processed organometallic halide perovskite thin films. Focuses are made on the impact of ambient air conditions, typically adventitious moisture, on the crystallization of perovskites thin films. The challenges and strategies in the technology transfer from the glovebox or ambient air spin coating to scalable meniscus blade coating are also discussed to shed light on the manufacture of ambient air–processed PSCs.

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