Listar por tema "ion migration"

Mostrando ítems 1-8 de 8

    • openAccess   Assessing the Drawbacks and Benefits of Ion Migration in Lead Halide Perovskites 

      Sakhatskyi, Kostiantyn; John, Rohit Abraham; Guerrero, Antonio; Tsarev, Sergey; Sabisch, Sebastian; Das, Tisita; Matt, Gebhard J.; Yakunin, Sergii; Cherniukh, Ihor; Kotyrba, Martin; Berezovska, Yuliia; Bodnarchuk, Maryna; Chakraborty, Sudip; Bisquert, Juan; Kovalenko, Maksym V. American Chemical Society (2022-10-14)
      Since the inception of the unprecedented rise of halide perovskites for photovoltaic research, ion migration has shadowed this material class with undesirable hysteresis and degradation effects, limiting its practical ...

    • closedAccess   Enhanced LED Performance by Ion Migration in Multiple Quantum Well Perovskite 

      Yudco, Shir; Bisquert, Juan; Etgar, Lioz American Chemical Society (2023-12-15)
      Here we study the effect of ion migration on the performance of perovskite light emitting diodes (PeLEDs). We compared aromatic and linear barrier molecules in Ruddlesden-Popper and Dion-Jacobson two-dimensional perovskites ...

    • closedAccess   Impact of Scan Rate and Mobile Ion Concentration on the Anomalous J-V Curves of Metal Halide Perovskite-Based Memristors 

      Pérez-Martínez, José Carlos; Martín Martín, Diego; Del Pozo, Gonzalo; Arredondo, Belén; Guerrero, Antonio; Romero, Beatriz Institute of Electrical and Electronics Engineers (2023-08)
      Bias voltage scan rate and mobile ion concentration have a strong influence in J-V curves of metal halide perovskite-based memristors. In addition to hysteresis, in some cases J-V curves also show an anomalous drop in ...

    • openAccess   Ionic Field Screening in MAPbBr3 Crystals Revealed from Remnant Sensitivity in X-ray Detection 

      Alvarez, Agustin; Lédée, Ferdinand; García-Batlle, Marisé; López Varo, Pilar; Gros-Daillon, Eric; Mayén Guillén, Javier; Verilhac, Jean-Marie; Lemercier, Thibault; Zaccaro, Julien; Marsal, Lluis F.; Garcia-Belmonte, Germà; Almora Rodríguez, Osbel American Chemical Society (2023-05-03)
      Research on metal halide perovskites as absorbers for X-ray detection is an attractive subject due to the optimal optoelectronic properties of these materials for high-sensitivity applications. However, the contact degradation ...

    • openAccess   Mobile Ion-Driven Modulation of Electronic Conductivity Explains Long-Timescale Electrical Response in Lead Iodide Perovskite Thick Pellets 

      García-Batlle, Marisé; Deumel, Sarah; Huerdler, Judith E.; Tedde, Sandro Francesco; Guerrero, Antonio; Almora Rodríguez, Osbel; Garcia-Belmonte, Germà American Chemical Society (2021-07-26)
      The favorable optoelectronic properties of metal halide perovskites have been used for X- and γ-ray detection, solar energy, and optoelectronics. Large electronic mobility, reduced recombination losses of the electron–hole ...

    • openAccess   Origins and mechanisms of hysteresis in organometal halide perovskites 

      Li, Cheng; Guerrero, Antonio; Zhong, Yu; Huettner, Sven IOP (2017-04)
      Inorganic–organic halide organometal perovskites, such as CH3NH3PbI3 and CsPbI3, etc, have been an unprecedented rising star in the field of photovoltaics since 2009, owing to their exceptionally high power conversion ...

    • openAccess   Potassium ions as a kinetic controller in ionic double layers for hysteresis-free perovskite solar cells 

      kim, Seul-Gi; Cheng, Li; Guerrero, Antonio; Kim, June-Mo; Zhong, Yu; Bisquert, Juan; Huettner, Sven; Park, Nam-Gyu Royal Society of Chemistry (2019-07-22)
      Since ion migration and interaction with external contacts has been regarded as one of the origins for photocurrent density (J)–voltage (V) hysteresis and phase segregation in perovskite solar cells (PSCs) under operational ...

    • openAccess   Real-Time Observation of Iodide Ion Migration in Methylammonium Lead Halide Perovskites 

      Li, Cheng; Guerrero, Antonio; Yu, Zhong; Gräser, Anna; Melo Luna, Carlos Andres; Köhler, Jürgen; Bisquert, Juan; Hildner, Richard; Huettner, Sven Wiley (2017)
      Organic-inorganic metal-halide perovskites (e.g. CH3NH3PbI3-xClx) emerged as a promising opto-electronic material. However, the Shockley–Queisser Limit for the power conversion efficiency (PCE) of perovskite-based photovoltaic ...