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Browsing by Author "Mollar García, Miguel Alfonso"

Now showing items 1-20 of 43

Annealing study of electrodeposited CuInSe2 and CuInS2 thin films

Saber, Suzan; Mollar García, Miguel Alfonso; El Nahrawy, Amany; Khattab, Nagwa; Eid, Ali; Abo Ali, Mohamed; Marí, B. (Springer-Verlag, 2018)

[EN] In this study CuInSe2 and CuInS2 thin films were prepared onto ITO glass substrate using the electrodeposition technique in aqueous solution. The electrodeposited films were characterized by X-ray diffraction (XRD), ...
Anodic Oxide Films on Niobium and Tantalum in Different Aqueous Electrolytes and Their Impedance Characteristics

Verma, Naveen; SINGH, K.C.; Marí Soucase, Bernabé; Mollar García, Miguel Alfonso; Jindal, Jitender (Institute of Physics, Polish Academy of Sciences, 2016)

[EN] The anodic oxide films were prepared on the niobium and tantalum in aqueous electrolyte mixtures containing 1 M CH3COOH + 1 M H3PO4 or 1 M CH3COOH + 1 vol.% HF or 1 M CH3COOH + 1 M H3PO4 + 1 vol.% HF at 30 V for 30 ...
Broadband, site selective and time resolved photoluminescence spectroscopic studies of finely size-modulated Y2O3:Eu3+ phosphors synthesized by a complex based precursor solution method

Ray, Sudeshna; León-Luis, Sergio Fabián; Manjón Herrera, Francisco Javier; Mollar García, Miguel Alfonso; Gomis Hilario, Oscar; Rodríguez-Mendoza, Ulises Ruyman; Agouram, Said; Muñoz, Alfonso; Lavín, Victor (Elsevier, 2014-01)

Undoped and Eu3+-doped cubic yttria (Y2O3) nanophosphors of good crystallinity, with selective particle sizes ranging between 6 and 37 nm and showing narrow size distributions, have been synthesized by a complex-based ...
Chemical spray pyrolysis of β-In2S3 thin films deposited at different temperatures

Sall, Thierno; Marí Soucase, Bernabé; Mollar García, Miguel Alfonso; Hartitti, Bouchaib; Fahoume, Mounir (Elsevier, 2015-01)

In2S3 thin films were deposited onto indium tin oxide-coated glass substrates by chemical spray pyrolysis while keeping the substrates at different temperatures. The structures of the sprayed In2S3 thin films were ...
Correlation between ban structure and magneto-transport properties in HgTe/CdTe two-dimensional far-infrared detector superlattice

Braigue, M.; NAFIDI, ABDELHAKIM; Ibdaha, A.; Chaib, H.; Sahsah, H.; Daoud, M.; Marí Soucase, Bernabé; Mollar García, Miguel Alfonso; Chander Singh, K.; Hartiti, B. (Springer Verlag (Germany), 2012-11)

Theoretical calculations of the electronic properties of n-type HgTe/CdTe superlattices (SLs) have provided an agreement with the experimental data on the magneto-transport behaviour. We have measured the conductivity, ...
Effect of guanidinium on the optical properties and structure of the methylammonium lead halide perovskite

Vega-Fleitas, Erica; Mollar García, Miguel Alfonso; Marí, B. (Elsevier, 2018)

[EN] The stability and performance of perovskite-based solar cells can be improved by changing the nature of the organic cation. Herein, mixed methylammoniumeguanidinium perovskites (MA1-xGAxPbI3) are structurally and ...
Effect of temperature in bands structure, effective mass and correlation with magneto-transport properties in a nanostructure far-infrared detector superlattice

Idbaha, A.; Nafidi, A.; Khallouq, K.; Charifi, H.; Chaib, H.; Marí, B.; Mollar García, Miguel Alfonso; Singh, K. Chander; Khalal, A.; Massaq, M.; El Gouti, T.; Taleb, T. Ait (INOE Publishing House, 2013-11)

We report here the effect of temperature in bands structure performed in the envelope function formalism, effective mass and magneto- transport properties of n-type HgTe (d(1)=8.6 nm) /CdTe (d(2)=3.2 nm) superlattices ...
Effective electrochemical n-type doping of ZnO thin films for optoelectronic window applications

Cembrero Coca, Paula; Mollar García, Miguel Alfonso; Singh, K.C.; Marí Soucase, Bernabé (Springer Verlag (Germany), 2013-05)

[EN] An effective n-type doping of ZnO thin films electrochemically synthetized was achieved by varying the chloride ion concentration in the starting electrolyte. The ratio between chloride and zinc cations was varied ...
Electrochemical Fabrication and Characterization of p-CuSCN/n-Fe2O3 Heterojunction Devices for Hydrogen Production

Bouhjar, Feriel; Ullah, Shafi; Mollar García, Miguel Alfonso; Marí, B.; Bessais, Brahim (The Electrochemical Society, 2017)

[EN] p-CuSCN/n-Fe2O3 heterojunctions were electrochemically prepared by sequentially depositing alpha-Fe2O3 and CuSCN films on FTO (SnO2:F) substrates. Both alpha-Fe2O3 and CuSCN films and alpha-Fe2O3/CuSCN heterojunctions ...
Electrochemical Fabrication and Characterization of p-CuSCn/n-ZnO Heterojunction Devices

Marí Soucase, Bernabé; Singh, Krishan Chander; Ortiz Moya, Laura; Mollar García, Miguel Alfonso (Springer Verlag (Germany), 2013-03)

[EN] p-CuSCN/n-ZnO heterojunction devices were prepared by depositing CuSCN electrochemically over a ZnO film previously deposited. The compact and smooth surface films of n-ZnO on FTO substrate were deposited electrochemically ...
Electrodeposición de películas de ZnO dopado con cloro para dispositivos fotovolataicos

Cembrero Coca, Paula (2016-03-01)

El objetivo de este estudio es la preparación y caracterización de películas delgadas de ZnO tipo n dopado con cloro mediante la técnica de electrodeposición. El ZnO es utilizado para aplicaciones optoelectrónicas y en ...
Electrodeposition of CuGaSe2 and CuGaS2 thin films for photovoltaic applications

Ullah, Shafi; Mollar García, Miguel Alfonso; Marí, B. (Springer Verlag (Germany), 2016-08)

Abstract CuGaSe2 and CuGaS2 polycrystalline thin film absorbers were prepared by one-step electrodeposition from an aqueous electrolyte containing CuCl2, GaCl3 and H2SeO3. The pH of the solution was adjusted to 2.3 by ...
Electrodeposition of hybrid ZnO/organic dye films

Moya Forero, Mónica Mercedes; Marí Soucase, Bernabé; Mollar García, Miguel Alfonso (Wiley-VCH Verlag GmbH & Co., 2011)

[EN] The viability of the electrodeposition as a suitable technique for preparing new porous hybrid materials has been tested in this paper. Hybrid ZnO films with two different organic dyes: Eosin-Y and Tetrasulphonated- ...
Electrodeposition of ZnO Thin Films on a Flexible Conductive Substrates

Wang, He; Chen, Yong-Jian; Xu, Feng; Cui, Hai-Ning; Marí Soucase, Bernabé; Mollar García, Miguel Alfonso; Wang, Rong (Trans Tech Publications, 2014-07)

[EN] Since transparent conducting oxides can be as a buttom layer of complex film electrodes, electrodeposition technique may produce ZnO films depending on variety conditions and modified surface layers of substrates ...
Growth mechanism and morphology of ZnO/Eosin-Y hybrid films

Marí Soucase, Bernabé; Singh, Krishan Chander; Mollar García, Miguel Alfonso; Moya Forero, Mónica Mercedes; Rana, Ravi (Kexue Chubanshe, 2012)

Thin hybrid films of ZnO/eosin-Y were prepared by electrodeposition at -0.8 and -0.9 V in aqueous and non-aqueous baths at temperatures ranging from 40 to 90 °C with dye concentrations of 100 and 400 µmol·L-1 . The films ...
High-pressure structural and elastic properties of Tl2O3

Gomis, O.; Santamaría-Pérez, D.; Ruiz-Fuertes, J.; Sans, J. A.; Vilaplana Cerda, Rosario Isabel; Ortiz, H. M.; García-Domene, B.; Manjón Herrera, Francisco Javier; Errandonea, D.; Rodríguez-Hernández, P.; Muñoz, A.; Mollar García, Miguel Alfonso (American Institute of Physics (AIP), 2014-10-07)

The structural properties of Thallium (III) oxide (Tl2O3) have been studied both experimentally and theoretically under compression at room temperature. X-ray powder diffraction measurements up to 37.7 GPa have been ...
High-pressure theoretical and experimental study of HgWO4

Lopez-Solano, J.; Rodriguez-Hernandez, Plácida; Muñoz, A.; Santamaria-Perez, David; Manjón Herrera, Francisco Javier; Ray, S.; Gomis Hilario, Oscar; Mollar García, Miguel Alfonso; Panchal, V.; Errandonea, Daniel (Taylor & Francis, 2011-03)

HgWO 4 at ambient pressure is characterized using a combination of ab initio calculations, X-ray diffraction and Raman scattering measurements. The effect of low pressure and temperature on the structural stability is ...
Hydrothermal synthesis of nanostructured Cr-doped hematite with enhanced photoelectrochemical activity

Bouhjar, Feriel; Mollar García, Miguel Alfonso; Chourou, M.L.; Marí, B.; Bessais, Brahim (Elsevier, 2018)

[EN] Using the easily applicable hydrothermal method Cr-doped hematite thin films have been deposited polycrystalline on conductive glass substrates. The hydrothermal bath consisted of an aqueous solution containing a ...
Impact of iodide substitution on the physical properties and stability of cesium lead halide perovskite thin films CsPbBr3-xIx (0 <= x <= 1)

Atourki, Lahoucine; Vega-Fleitas, Erica; Mollar García, Miguel Alfonso; Marí, B.; Kirou, Hassan; Bouabid, Khalid; Ihlal, Ahmed (Elsevier, 2017)

[EN] This study sheds light on the effect of iodide substitution on the structural and optical properties of solution processed mixed cesium lead perovskite thin films CsPbBr3-xIx (0 <= x <= 1) as well as their atmospheric ...
Influence of a Compact Fe2O3 Layer on the Photovoltaic Performance of Perovskite-Based Solar Cells

Bouhjar, F.; Mollar García, Miguel Alfonso; Ullah, Shafi; Marí, B.; Bessais, B. (The Electrochemical Society, 2018)

[EN] In this study, uniform and dense iron oxide ¿-Fe2O3 thin films were used as an electron-transport layer (ETL) in CH3NH3PbI3-based perovskite solar cells (PSCs), replacing the Titanium dioxide (TiO2) ETL conventionally ...