Listar por autoría "0fcf10b6-a0e5-4d2d-a966-47e2c8b0e57a"

Mostrando ítems 1-20 de 40

    • openAccess   A characterization on hybrid lead halide perovskite solar cells with Ti02 mesoporous scaffold 

      Almora Rodríguez, Osbel Universitat Jaume I (2015-11-19)
      The booming perovskite solar cells (PSCs) field has emerged from the solid-state dye-sensitized photovoltaic cells with significant advances in solar to electric power conversion efficiency in a relatively short time. ...

    • openAccess   Analysis of the Hysteresis Behavior of Perovskite Solar Cells with Interfacial Fullerene Self-Assembled Monolayers 

      Vallés Pelarda, Marta; Clasen Hames, Bruno; García-Benito, Inés; Almora Rodríguez, Osbel; Molina-Ontoria, Agustín; S. Sánchez, Rafael; Garcia-Belmonte, Germà; Martín, Nazario; Mora-Sero, Ivan American Chemical Society (2016-10)
      The use of self-assembled monolayers (SAMs) of fullerene derivatives reduces the hysteresis of perovskite solar cells (PSCs). We have investigated three different fullerene derivatives observing a decrease on hysteresis ...

    • openAccess   Analytical model for light modulating impedance spectroscopy (LIMIS) in all-solid-state p-n junction solar cells at open-circuit 

      Almora Rodríguez, Osbel; Miravet, Daniel; Matt, Gebhard J.; Garcia-Belmonte, Germà; Brabec, Christoph J. American Institute of Physics (2010-01-02)
      Potentiostatic impedance spectroscopy (IS) is a well-known tool for characterization of materials and electronic devices. It can be complemented by numerical simulation strategies relying on drift-diffusion equations without ...

    • openAccess   Ballistic-like space-charge-limited currents in halide perovskites at room temperature 

      Almora Rodríguez, Osbel; Miravet, Daniel; García-Batlle, Marisé; Garcia-Belmonte, Germà American Institute of Physics (2021-12-13)
      The emergence of halide perovskites in photovoltaics has diversified the research on this material family and extended their application toward several fields in the optoelectronics, such as photo- and ionizing-radiation ...

    • openAccess   Beyond Protocols: Understanding the Electrical Behavior of Perovskite Solar Cells by Impedance Spectroscopy 

      Ghahremanirad, Elnaz; Almora Rodríguez, Osbel; Suresh, Sunil; Drew, Amandine A.; Chowdhury, Towhid; Uhl, Alexander R. Wiley (2023-08-11)
      Impedance spectroscopy (IS) is an effective characterization technique used to probe and distinguish charge dynamics occurring at different timescales in optoelectronic and electric devices. With the rapid rise of research ...

    • closedAccess   Capacitive dark currents, hysteresis, and electrode polarization in lead halide perovskite solar cells 

      Almora Rodríguez, Osbel; Zarazúa, Isaac; Mas, Elena; Mora-Sero, Ivan; Bisquert, Juan; Garcia-Belmonte, Germà American Chemical Society (2015-04)
      Despite spectacular advances in conversion efficiency of perovskite solar cell many aspects of its operating modes are still poorly understood. Capacitance constitutes a key parameter to explore which mechanisms control ...

    • openAccess   Characterization of Aerosol Deposited Cesium Lead Tribromide Perovskite Films on Interdigited ITO Electrodes 

      These, Albert; Khansur, Neamul H; Almora Rodríguez, Osbel; Luer, Larry; Matt, Gebhard J.; Eckstein, Udo; Barabash, Anastasia; Osvet, Andres; Webber, Kyle; Brabec, Christoph J. John Wiley & Sons (2021-01-15)
      Aerosol deposition (AD) is a promising additive manufacturing method to fabricate low-cost, scalable films at room temperature, but has not been considered for semiconductor processing, so far. The successful preparation ...

    • openAccess   Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr3 Single Crystals 

      García-Batlle, Marisé; Mayén Guillén, Javier; Chapran, Marian; Baussens, Oriane; Zaccaro, Julien; Verilhac, Jean‐Marie; Gros-Daillon, Eric; Guerrero, Antonio; Almora Rodríguez, Osbel; Garcia-Belmonte, Germà American Chemical Society (2022-03-11)
      The optoelectronic properties of halide perovskite materials have fostered their utilization in many applications. Unravelling their working mechanisms remains challenging because of their mixed ionic–electronic conductive ...

    • closedAccess   Degradation through Directional Self-Doping and Homogeneous Density of Recombination Centers Hindered by 1,8-Diiodooctane Additive in Non-Fullerene Organic Solar Cells 

      Almora Rodríguez, Osbel; Wiegand, Julius; López Varo, Pilar; Matt, Gebhard Josed; Brabec, Christoph J. Wiley (2021-03-01)
      Non-fullerene-based organic solar cells (OSCs) have recently proven to perform with efficiencies above 18%. This is an important milestone for one of the most promising technologies in the fields of flexible and ...

    • openAccess   Device Performance of Emerging Photovoltaic Materials (Version 2) 

      Almora Rodríguez, Osbel; Baran, Derya; Bazan, Guillermo; Berger, Christian; Cabrera, Carlos I.; Et al. Wiley-VCH Verlag (2021-11-11)
      Following the 1st release of the “Emerging photovoltaic (PV) reports”, the best achievements in the performance of emerging photovoltaic devices in diverse emerging photovoltaic research subjects are summarized, as reported ...

    • openAccess   Device Performance of Emerging Photovoltaic Materials (Version 2) 

      Almora Rodríguez, Osbel; Baran, Derya; Bazan, Guillermo; Berger, Christian; Cabrera, Carlos I.; Catchpole, Kylie; Erten Ela, Sule; Guo, Fei; Hauch, Jens; Ho-Baillie, Anita; Jacobsson, Jesper; Janssen, Rene; Kirchartz, Thomas; Kopidakis, Nikos; Li, Yongfang; Loi, Maria Antonietta; Lunt, Richard; Mathew, Xavier; McGehee, Michael; Min, Jie; Mitzi, David; Nazeeruddin, Mohammad Khaja; Nelson, Jenny; Nogueira, Ana Flavia; Paetzold, Ulrich Wilhelm; Park, Nam-Gyu; Rand, Barry; Rau, Uwe; Snaith, Henry; Unger, Eva; Vaillant Roca, Lidice; Yip, Hin-Lap; Brabec, Christoph J. Wiley (2021-11-11)
      Following the 1st release of the “Emerging photovoltaic (PV) reports”, the best achievements in the performance of emerging photovoltaic devices in diverse emerging photovoltaic research subjects are summarized, as reported ...

    • openAccess   Device Physics of Hybrid Perovskite Solar cells: Theory and Experiment 

      Lopez-Varo, Pilar; Jiménez Tejada, Juan Antonio; Garcia-Rosell, Manuel; Ravishankar, Sandheep; Garcia-Belmonte, Germà; Bisquert, Juan; Almora Rodríguez, Osbel Wiley (2018)
      Perovskite solar cells (PSCs) exhibit a series of distinctive features in their optoelectronic response which have a crucial influence on the performance, particularly for long-time response. Here, a survey of recent ...

    • openAccess   Direct observation of surface polarization at hybrid perovskite/Au interfaces by dark transient experiments 

      Caram, Jorge; García-Batlle, Marisé; Almora Rodríguez, Osbel; Arce, Roberto; Guerrero, Antonio; Garcia-Belmonte, Germà American Institute of Physics (2020-05-05)
      A distinctive feature of hybrid perovskite light-absorbing materials is the non-negligible ionic conductivity influencing photovoltaic performance and stability. Moving ions or vacancies can naturally accumulate at the ...

    • openAccess   Discerning recombination mechanisms and ideality factors through impedance analysis of high-efficiency perovskite solar cells 

      Almora Rodríguez, Osbel; Taek Cho, Kyung; Aghazada, Sadig; Zimmermann, Iwan; Matt, Gebhard J.; Brabec, Christoph J.; Nazeeruddin, Mohammad Khaja; Garcia-Belmonte, Germà Elsevier (2018)
      The ubiquitous hysteresis in the current-voltage characteristic of perovskite solar cells (PSCs) interferes in a proper determination of the diode ideality factor (n), a key parameter commonly adopted to analyze recombination ...

    • openAccess   Do Capacitance Measurements Reveal Light-Induced Bulk Dielectric Changes in Photovoltaic Perovskites? 

      Almora Rodríguez, Osbel; Aranda Alonso, Clara; Garcia-Belmonte, Germà American Chemical Society (2018-06)
      Several studies have identified complex interactions between photogenerated carriers and the crystal lattice in perovskite materials for photovoltaics, which are regarded to have an inherently soft character. Light is known ...

    • openAccess   Effective Ion Mobility and Long-Term Dark Current of Metal Halide Perovskites with Different Crystallinities and Compositions 

      García-Batlle, Marisé; Deumel, Sarah; Tedde, Sandro Francesco; Almora Rodríguez, Osbel; Garcia-Belmonte, Germà Wiley (2022-12)
      Ion transport properties in metal halide perovskite still constitute a subject of intense research because of the evident connection between mobile defects and device performance and operation degradation. In the case of ...

    • openAccess   High-sensitivity high-resolution X-ray imaging with soft-sintered metal halide perovskites 

      Deumel, Sarah; van Breemen, Albert; Gelinck, Gerwin; Peeters, Bart; Maas, Joris; Verbeek, Roy; Shanmugam, Santhosh; Akkerman, Hylke; Meulenkamp, Eric; Huerdler, Judith E.; Acharya, Manognya; García-Batlle, Marisé; Almora Rodríguez, Osbel; Guerrero, Antonio; Garcia-Belmonte, Germà; Heiss, Wolfgang; Schmidt, Oliver; Tedde, Sandro Francesco Nature Research (2021-09-23)
      To realize the potential of artificial intelligence in medical imaging, improvements in imaging capabilities are required, as well as advances in computing power and algorithms. Hybrid inorganic–organic metal halide ...

    • openAccess   Ion-mediated hopping electrode polarization model for impedance spectra of CH3NH3PbI3 

      Almora Rodríguez, Osbel; González Lezcano, Alfredo; Guerrero, Antonio; Brabec, Christoph J.; Garcia-Belmonte, Germà American Institute of Physics (2020-08-18)
      Methylammonium lead iodide (CH3NH3PbI3) is one of the most attractive materials for optoelectronic applications, and it is the most typical absorber in perovskite solar cells, which are unprecedentedly successful devices ...

    • openAccess   Ionic charging by local imbalance at interfaces in hybrid lead halide perovskites 

      Almora Rodríguez, Osbel; Guerrero, Antonio; Garcia-Belmonte, Germà AIP Publishing (2016)
      Identification of specific operating mechanisms becomes particularly challenging when mixed ionic-electronic conductors are used in optoelectronic devices. Ionic effects in perovskitesolar cells are believed to distort ...

    • openAccess   Ionic Dipolar Switching Hinders Charge Collection in Perovskite Solar Cells with Normal and Inverted Hysteresis 

      Almora Rodríguez, Osbel; López Varo, Pilar; Taek Cho, Kyung; Aghazada, Sadig; Meng, Wei; Hou, Yi; Echeverría-Arrondo, Carlos; Zimmermann, Iwan; Matt, Gebhard J.; Jiménez Tejada, Juan Antonio; Brabec, Christoph J.; Nazeeruddin, Mohammad Khaja; Garcia-Belmonte, Germà Elsevier (2019-06-15)
      Drift-diffusion modeling of the ionic dipole switching from the measurement of fast scanned and long pre-biased electrical response is proposed as a novel protocol for evaluation of limit hysteretic effects in perovskite ...