Electrodeposition of bismuth, tellurium, and bismuth telluride thin films from choline chloride–oxalic acid ionic liquid

2012 ◽  
Vol 43 (3) ◽  
pp. 309-321 ◽  
Author(s):  
Camelia Agapescu ◽  
Anca Cojocaru ◽  
Adina Cotarta ◽  
Teodor Visan
Keyword(s):  
Thin Films ◽  
Ionic Liquid ◽  
Oxalic Acid ◽  
Bismuth Telluride ◽  
Choline Chloride

Ionic Liquid Electrochemical Synthesis of Earth Abundant Monophase Chalcostibite p-CuSbS2 Photo-absorber Thin films for Heterojunction Solar Cells With n-ZnO

2015 ◽  
Vol 1738 ◽  
Author(s):  
Nishanth R. Janardhana ◽  
Navjot Kaur Sidhu ◽  
Ratheesh R. Thankalekshmi ◽  
Alok C. Rastogi
Keyword(s):  
Thin Films ◽  
Ionic Liquid ◽  
Choline Chloride ◽  
Eutectic Mixture ◽  
Single Step ◽  
Growth Potential ◽  
Sulfur Source ◽  
Secondary Phases ◽  
Electro Deposition ◽  
Ionic Liquid Electrolyte

ABSTRACTSingle step synthesis of monophase CuSbS2 thin films by electro-deposition in ionic liquid electrolyte based on choline chloride and urea (ChCl:U) eutectic mixture is described. The formation of binary CuxS and SbxSy film phases using CuCl2 and SbCl3 precursors along with Na2S2O3 as sulfur source in ChCl:U are established as -0.59 V and -0.36 V vs. Pt, respectively by cyclic voltammetry and used to optimize CuSbS2 thin films growth potential and precursor composition. CuSbS2 films deposited at -0.65 V vs Pt with 1:1 Cu to Sb precursor ratio at 80⁰C are highly crystalline in chalcostibite orthorhombic structure. Deviant Cu/Sb ratio at 1:0.71 and 1:1.4 reveal inclusion of Cu3SbS3 and Sb2S3, respectively. Direct 1.65 eV band gap for single phase CuSbS2 film and with inclusive secondary phases at 1.73±0.1 eV and 2.13 eV is observed. As-deposited CuSbS2 films are p-type and n-p hetero-junction device in the n-ZnO/p-CuSbS2/Ag structure shows rectifying I-V curves and dependence on the CuSbS2 film growth conditions.

Study of electrode processes and deposition of cobalt thin films from ionic liquid analogues based on choline chloride

2014 ◽  
Vol 19 (4) ◽  
pp. 1001-1014 ◽  
Author(s):  
Anca Cojocaru ◽  
Mariana Lili Mares ◽  
Paula Prioteasa ◽  
Liana Anicai ◽  
Teodor Visan
Keyword(s):  
Thin Films ◽  
Ionic Liquid ◽  
Choline Chloride ◽  
Electrode Processes ◽  
Cobalt Thin Films

Promising thermoelectric performance in Sb-Sn co-substituted bismuth telluride thin films

2020 ◽  
Author(s):  
Sukhdeep Singh ◽  
Silky Jindal ◽  
S. K. Tripathi
Keyword(s):  
Thin Films ◽  
Bismuth Telluride ◽  
Thermoelectric Performance

scholarly journals Direct measurement of the thermoelectric properties of electrochemically deposited Bi2Te3 thin films

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Jose Recatala-Gomez ◽  
Pawan Kumar ◽  
Ady Suwardi ◽  
Anas Abutaha ◽  
Iris Nandhakumar ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermoelectric Properties ◽  
Bismuth Telluride ◽  
Indium Tin Oxide ◽  
Seed Layer ◽  
Room Temperature ◽  
Low Cost ◽  
Temperature Dependent ◽  
Temperature Heat ◽  
Electrochemically Deposited

Abstract The best known thermoelectric material for near room temperature heat-to-electricity conversion is bismuth telluride. Amongst the possible fabrication techniques, electrodeposition has attracted attention due to its simplicity and low cost. However, the measurement of the thermoelectric properties of electrodeposited films is challenging because of the conducting seed layer underneath the film. Here, we develop a method to directly measure the thermoelectric properties of electrodeposited bismuth telluride thin films, grown on indium tin oxide. Using this technique, the temperature dependent thermoelectric properties (Seebeck coefficient and electrical conductivity) of electrodeposited thin films have been measured down to 100 K. A parallel resistor model is employed to discern the signal of the film from the signal of the seed layer and the data are carefully analysed and contextualized with literature. Our analysis demonstrates that the thermoelectric properties of electrodeposited films can be accurately evaluated without inflicting any damage to the films.

Characteristics of nanostructured bismuth telluride thin films fabricated by oblique deposition

Vacuum ◽  
2018 ◽  
Vol 148 ◽  
pp. 296-302 ◽  
Author(s):  
Satoshi Morikawa ◽  
Yuji Satake ◽  
Masayuki Takashiri
Keyword(s):  
Thin Films ◽  
Bismuth Telluride ◽  
Oblique Deposition

Beneficial and detrimental effects of choline chloride–oxalic acid deep eutectic solvent on biogas production

2021 ◽  
Vol 131 ◽  
pp. 368-375
Author(s):  
Filipa Lima ◽  
Luis C. Branco ◽  
Nuno Lapa ◽  
Isabel M. Marrucho
Keyword(s):  
Oxalic Acid ◽  
Biogas Production ◽  
Choline Chloride ◽  
Deep Eutectic Solvent

scholarly journals Choline chloride–zinc chloride ionic liquid as a green template for the sol–gel synthesis of mesoporous titania

RSC Advances ◽  
2017 ◽  
Vol 7 (17) ◽  
pp. 10081-10091 ◽  
Author(s):  
T. Preethi ◽  
M. P. Padmapriya ◽  
B. Abarna ◽  
G. R. Rajarajeswari
Keyword(s):  
Ionic Liquid ◽  
Zinc Chloride ◽  
Choline Chloride ◽  
Sol Gel ◽  
Mesoporous Titania ◽  
Anatase Titania ◽  
Sol Gel Synthesis

Choline chloride–zinc chloride ionic liquid has been used as a green template to synthesis highly crystalline mesoporou anatase titania.

Deep eutectic solvent delignification: Impact of initial lignin

BioResources ◽  
2017 ◽  
Vol 12 (4) ◽  
pp. 7301-7310
Author(s):  
Veronika Majová ◽  
Silvia Horanová ◽  
Andrea Škulcová ◽  
Jozef Šima ◽  
Michal Jablonský
Keyword(s):  
Lactic Acid ◽  
Oxalic Acid ◽  
Lignin Content ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Kappa Number ◽  
Kraft Pulps ◽  
Oxygen Delignification ◽  
Detailed Understanding

This study aimed to resolve the issue of the lack of detailed understanding of the effect of initial lignin content in hardwood kraft pulps on pulp delignification by deep eutectic solvents. The authors used Kappa number of the concerned pulp, intrinsic viscosity, and selectivity and efficiency of delignification as the parameters of the effect. The pulp (50 g oven dry pulp) was treated with four different DESs systems based on choline chloride with lactic acid (1:9), oxalic acid (1:1), malic acid (1:1), and system alanine:lactic acid (1:9); the results were compared to those reached by oxygen delignification. The results showed that the pulp with a higher initial lignin content had a greater fraction of easily removed lignin fragments.

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