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SUMMARY:Student Seminar Session: Applied Physics
DTSTART;VALUE=DATE-TIME:20240313T140000Z
DTEND;VALUE=DATE-TIME:20240313T163000Z
DTSTAMP;VALUE=DATE-TIME:20260916T063014Z
UID:indico-event-7489@indico.ific.uv.es
DESCRIPTION:15:00 – 15:30 Ismael Fernández Guillén\n\nTittle: Harnessi
 ng Monocrystal Perovskites for Memristor Applications: A Promising Frontie
 r in Neuromorphic Computing\n\nThe integration of perovskite materials int
 o memristor devices heralds a new era in neuromorphic computing\, offering
  unprecedented opportunities for efficient information processing and stor
 age. Perovskite-based memristors leverage the unique electronic properties
  of these materials\, including high carrier mobility\, tunable bandgap\, 
 and facile ion migration. This abstract explores the burgeoning field of p
 erovskite memristors\, highlighting their remarkable attributes such as no
 n-volatile resistive switching\, low energy consumption\, and compatibilit
 y with large-scale fabrication processes. Additionally\, the synergistic c
 ombination of perovskite memristors with emerging technologies like artifi
 cial intelligence and brain-inspired computing architectures holds immense
  potential for realizing energy-efficient\, brain-inspired computing syste
 ms. Through elucidating the advantages and recent advancements in perovski
 te-based memristors\, this abstract aims to catalyze further research and 
 innovation in the field\, paving the way for next-generation computing par
 adigms. In this context\, monocrystalline perovskites offer distinct advan
 tages over polycrystalline counterparts in the field of memristors. Their 
 precisely ordered atomic structure facilitates superior charge transport p
 roperties\, resulting in enhanced memristive behavior\, such as lower swit
 ching voltages and improved retention characteristics. Moreover\, the abse
 nce of grain boundaries in single crystals minimizes defect-induced scatte
 ring and ensures uniform device performance. This abstract underscores the
  significance of monocrystalline perovskites in advancing memristor techno
 logy by exploiting their inherent structural integrity and electronic prop
 erties.\n\n15:30 – 16:00 Pablo Franco Betancour\n\nTittle: Unconventiona
 l low-frequency features in the impedance spectroscopy response of metal h
 alide perovskites-based systems\n\nImpedance spectroscopy (IS) has been a 
 valuable tool for characterizing photovoltaic and optoelectronic devices. 
 This technique enables the frequency splitting of the main features\, allo
 wing the study of charge and ionic processes independently and providing d
 etailed information on the dynamics involved in the device’s operation. 
 However\, the interpretation of the IS data for perovskite remains challen
 ging due to the number of dynamic processes having places both in the inte
 rfaces and the bulk. In this work\, we focused on analyzing the different 
 behaviors found in impedance spectra at low-frequency domains in relation 
 to devices working ranges\, architectures\, and perovskite composition.\n\
 nCoffe break\n\n16:15 – 16:45 Miriam Mínguez Avellán\n\nTittle: Exploi
 ting Perovskite’s Kryptonite: A humidity treatment for efficient photoca
 talysts\n\nLead-halide perovskites are a very promising family of material
 s due to their optoelectronic properties and chemical versatility. These c
 haracteristics make them suitable for very different applications such as 
 solar cells\, light-emitting diodes (LEDs)\, photodetectors or photocataly
 sts. Despite this\, one of the main drawbacks of perovskite materials is s
 tability. Their behaviour against moisture\, temperature and UV light is c
 ritical\, causing accelerated decomposition and degradation of the materia
 l. To address these main drawbacks\, the in-situ synthesis of perovskite m
 aterials inside a host matrix emerges as a very promising alternative. In 
 this talk\, I will present a two-step process to synthesize MAPbI3 nanocry
 stals embedded in a Ni(AcO)2 matrix only using humidity as driven force fo
 r the crystallization and their photocatalytic properties.\n\n16:45 – 17
 :15 Omar Eduardo Solís Luna\n\nTittle: Improving the performance and stab
 ility of Sn-based perovskite solar cells\n\nTin-based halide perovskites(S
 n-HPs) have shown great attention due to their optoelectronic properties\,
  high photoconversion efficiency and low toxicity compared to Lead-based p
 erovskites. However\, one of the primary problems of Sn-HPs is the easy ox
 idation of Sn2+ into Sn+4 that promotes tin vacancies in the perovskite st
 ructure\, which leads to a poor film morphology and degradation mechanisms
  that compromises the device performance and stability. Nevertheless\, thi
 s problem can be mitigated with the use of reducing agents\, antioxidants 
 and bulky ammonium cations (2D cations). The addition of 2D cations into t
 he perovskite structure provides better stability and a slower oxidation\,
  due to its high hydrophobicity. In this work\, we have incorporated  2-t
 hiopheneethylammonium (TEA) as 2D cation into FASnI3 perovskite \, leading
  to the formation of a 2D/3D perovskite structure. This approach entails h
 igh quality films and a lower concentration of Sn4+ on the surface. Which 
 improves the device performance and stability even in ambient conditions\,
  in comparison with the reference device of pure FASnI3.\n\nhttps://indico
 .ific.uv.es/event/7489/
LOCATION:Semisotano parque científico\, sala SS6\, bajo el IFIC
URL:https://indico.ific.uv.es/event/7489/
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