Listar por tema "thin films"

Mostrando ítems 1-13 de 13

    • openAccess   Analysis of the Pb0.30CaxSryTiO3 ternary system: The effect of Ca2+ and Sr2+ cations on the electrical properties of PbTiO3 

      Gouveia, Amanda; Ribeiro , Lara Kelly; Assis, Marcelo de; Longo, Elson; Andres, Juan; pontes, fenelon Sao Paulo State University. Institute of Chemistry (2022-08-17)
      Powder and thin films of the Pb0.30Ca0.10Sr0.60TiO3 (PCST 30/10/60) and Pb0.30Ca0.60Sr0.10TiO3 (PCST 30/60/10) ternary system were synthetized by the polymeric precursor method and the thin films deposited on the Si/SiO2/Ti/Pt ...

    • openAccess   Chemi-Structural Stabilization of Formamidinium Lead Iodide Perovskite by Using Embedded Quantum Dots 

      Masi, Sofia; Echeverría-Arrondo, Carlos; muhammed, kunnummal; Ngo, Thi Tuyen; Mendez, Perla F.; López-Fraguas, Eduardo; Macias-Pinilla, David F.; Planelles, Josep; Climente, Juan I.; Mora-Sero, Ivan American Chemical Society (2020-01-6)
      The approaches to stabilize the perovskite structure of formamidinium lead iodide (FAPI) commonly result in a blue shift of the band gap, which limits the maximum photoconversion efficiency. Here, we report the use of PbS ...

    • closedAccess   Comprehensive experimental and theoretical studies on the synthesis and characterization of electrodeposited nanostructured Cu2O thin films 

      Gonçalves, Cristiane B.; Da Silva, Rafael T.; Dalenogare, Gustavo; Gonzaga, Isabelle M.D.; Mascaro, Lucia; Ferrer, Mateus M.; Assis, Marcelo de; Longo, Elson; de Carvalho, Hugo B.; Doriguetto, Antonio Carlos Elsevier (2023-11-01)
      In this study, we present a comprehensive analysis of the morphology, microstructure, and optical properties of electrodeposited Cu2O thin films on SnO2:F (FTO) substrates. The films were synthesized using the galvanostatic ...

    • closedAccess   Development of photovoltaic ceramic tile based on CZTSSe absorber 

      Calvet Roures, Iván; BARRACHINA ALBERT, ESTER; Martí Valls, Rafael Francisco; Fraga Chiva, Diego; Lyubenova, Teodora; Carda Castelló, Juan Bautista Elsevier (2015)
      Ceramic photovoltaic tile based on Cu2ZnSn(S,Se)4 semiconductor has been made by low-cost and easy processing method of preparation. Ceramic tile as alternative of soda-lime glass substrate has been used. The molybdenum ...

    • openAccess   Directional and Polarized Lasing Action on Pb-free FASnI3 Integrated in Flexible Optical Waveguide 

      Suárez, Isaac; Chirvony, Vladimir; Sanchez-Diaz, Jesus; S. Sánchez, Rafael; Mora-Sero, Ivan; Martínez-Pastor, Juan P. (2022)
      In this work, high-quality FASnI3 (FA, formamidinium) lead-free perovskite thin films are successfully incorporated in a flexible polyethylene terephthalate (PET) substrate to demonstrate amplified spontaneous emission ...

    • openAccess   Domain periodicity in an easy-plane antiferromagnet with Dzyaloshinskii-Moriya interaction 

      Tomasello, Riccardo; Sánchez-Tejerina San José, Luis; Lopez-Dominguez, Victor; Garescì, Francesca; Giordano, Anna; Carpentieri, Mario; Khalili Amiri, Pedram; Finocchio, Giovanni American Physical Society (2020-12-28)
      Antiferromagnetic spintronics is a promising emerging paradigm to develop high-performance computing and communications devices. Antiferromagnetic materials are more abundant than ferromagnets; hence, from a theoretical ...

    • openAccess   Effect of Al, Ga, and In Doping on the Optical, Structural, and Electric Properties of ZnO Thin Films 

      Porcar García, Samuel; González Cuadra, Jaime; Fraga Chiva, Diego; Stoyanova Lyubenova, Teodora; Soraca, Gina; Carda Castelló, Juan Bautista MDPI (2021-11-01)
      ZnO thin films with oxygen vacancies and doped with Al, Ga, and In (Zn1-xMxO1−y (x = 0.03)) have been successfully deposited on soda-lime glass substrates using a simple soft chemical method. The crystalline structure shows ...

    • openAccess   Enhanced Electrical Properties of Alkali-Doped ZnO Thin Films with Chemical Process 

      González Cuadra, Jaime; Porcar García, Samuel; Fraga Chiva, Diego; Lyubenova, Teodora; Carda Castelló, Juan Bautista MDPI (2021)
      Doped ZnO are among the most attractive transparent conductive oxides for solar cells because they are relatively cheap, can be textured for light trapping, and readily produced for large-scale coatings. Here, we focus on ...

    • closedAccess   Enhancing the Electronic Properties and Stability of High-EfficiencyTin-Lead Mixed Halide Perovskite Solar Cells via DopingEngineering 

      Sahamir, Shahrir Razey; Kamarudin, Muhammad Akmal; Ripolles, Teresa S.; Baranwal, Ajay Kumar; Kapil, Gaurav; Qing, Shen; Segawa, Hiroshi; Bisquert, Juan; Hayase, Shuzi American Chemical Society (2022-03-31)
      Overcoming Voc loss to increase the efficiency of perovskite solar cells (PSCs) has been aggressively studied. In this work, we introduce and compare rubidium iodide (RbI) and potassium iodide (KI) alkali metal halides ...

    • openAccess   Lead-Free Halide Perovskite Materials and Optoelectronic Devices: Progress and Prospective 

      López-Fernández, Iago; Valli, Donato; Wang, Chun-Yun; Samanta, Subarna; Okamoto, Takuya; Huang, Yi-Teng; Sun, Kun; Liu, Yang; Chirvony, Vladimir; Patra, Avijit; Zito, Juliette; De Trizio, Luca; Gaur, Deepika; Sun, Hong-Tao; Xia, Zhiguo; Li, Xiaoming; Zeng, Haibo; Mora-Sero, Ivan; Pradhan, Narayan; Martínez-Pastor, Juan P.; Müller-Buschbaum, Peter; Biju, Vasudevanpillai; Debnath, Tushar; Saliba, Michael; Debroye, Elke; Hoye, Robert; Infante, Ivan; Manna, Liberato; Polavarapu, Lakshminarayana Wiley (2023)
      Halide perovskites, in the form of thin films and colloidal nanocrystals, have recently taken semiconductor optoelectronics research by storm, and have emerged as promising candidates for high-performance solar cells, ...

    • openAccess   Single-Exciton Amplified Spontaneous Emission in Thin Films of CsPbX3 (X = Br, I) Perovskite Nanocrystals 

      Navarro-Arenas, Juan; Suárez, Isaac; Chirvony, Vladimir; Gualdrón Reyes, Andrés Fabián; Mora-Sero, Ivan; Martínez-Pastor, Juan P. American Chemical Society (2019-09-23)
      CsPbX3 perovskite nanocrystals (PNCs) have emerged as an excellent material for stimulated emission purposes, with even more prospective applications than conventional colloidal quantum dots. However, a better understanding ...

    • openAccess   Suppressing the Formation of High n-Phase and 3D Perovskites in the Fabrication of Ruddlesden-Popper Perovskite Thin Films by Bulky Organic Cation Engineering 

      Vázquez-Cárdenas, Rubén; Rodríguez Romero, Jesús; Echeverría-Arrondo, Carlos; Sanchez-Diaz, Jesus; Chirvony, Vladimir; Martínez-Pastor, Juan P.; Díaz-Leyva, Pedro; Reyes-Gómez, Juan; Zarazúa Macías , Isaac; Mora-Sero, Ivan American Chemical Society (2022-02-24)
      Two-dimensional perovskites (2D PVKs) were first studied because of their dielectric and magnetic properties for dielectric and transistor applications in the electronic field. As the optical properties were elucidated ...

    • openAccess   Unusual Spectrally Reproducible and High Q-Factor Random Lasing in Polycrystalline Tin Perovskite Films 

      Chirvony, Vladimir; Suárez, Isaac; Sanchez-Diaz, Jesus; S. Sánchez, Rafael; Rodríguez Romero, Jesús; Mora-Sero, Ivan; Martínez-Pastor, Juan P. Wiley (2022)
      An unusual spectrally reproducible near-IR random lasing (RL) with no fluctuation of lasing peak wavelength is disclosed in polycrystalline films of formamidinium tin triiodide perovskite, which have been chemically ...