Methylammonium iodide (CH3NH3I) was synthesized using a previously described method1. A concentrated aqueous solution of hydroiodic acid (HI) (15.0 ml, 57 wt% in water, Alfa Aesar) was reacte.
Poly(3,4-ethylenedioxythiophene): poly(4-styrenesulphonate).
The steady-state photocurrent curves were measured under simulated AM 1.5G irradiation (100 mW cm−2) using a Xenon-lamp-based solar simulator (Oriel 67005, 150 W Sola.
In situ observation of the ion drift under an electric field was carried out by locating the samples under an optical microscope (Olympus BX61) coupled to a high-resolution c.
KPFM and AFM measurements were carried out with a Dimension Icon (Bruker) in air and in the dark. Platinum–iridium-coated conductive probes (SCM-PIT, Bruker) wer.
The ferroelectric polarization measurements were carried out using a Precision Premier II from Radiant Technologies, both at room temperature and 77 K, (.
Contact online >>
A substantial visible-light photovoltaic effect is observed in BiFeO3 diode structures. These results should improve understanding of charge conduction mechanisms in leaky ferroelectrics and advance the design of switchable devices combining ferroelectric, electronic, and optical functionalities. Switchable diode effect in ferroelectric
Mar 31, 2020· The polycrystalline BFO thin film also exhibits a switchable photovoltaic effect with an open-circuit voltage of approximately 0.2 V and a short-circuit current of nearly 60 μA/cm 2 under illumination. This study demonstrates that the polycrystalline BFO thin film on a transparent substrate also has the ferroelectric switchable diode and
Jul 13, 2018· A new class of FPVs towards high-efficiency solar cell and optoelectronic applications is presented by demonstrating switchable ferroelectric photovoltaic effects and narrow band-gap properties using hexagonal ferrite (h-RFeO3) thin films, where R denotes rare-earth ions. Ferroelectric photovoltaics (FPVs) have drawn much attention owing to their high
The fundamentally different mechanism endows ferroelectric photovoltaics (FPV) with unique characteristics, such as switchable photovoltaic outputs (4 – 7), above-bandgap photovoltage (2, 3, 8 – 10), and light polarization dependence (3, 4, 10, 11).
Apr 25, 2018· The switchable photovoltaic effect would be ascribed to the reversible Schottky-to-Ohmic interfacial contacts modulated by polarization switching. Considering the advantages of low cost and easy growth procedure, the polycrystalline films are more suitable for practical applications than epitaxial films. However, the pure polycrystalline thin
Jul 6, 2018· The fundamentally different mechanism endows ferroelectric photovoltaics (FPV) with unique characteristics, such as switchable photovoltaic outputs (4 – 7), above-bandgap photovoltage (2, 3, 8 – 10), and light
The switchable photocurrent, generally observed in devices based on ferroelectric materials, reached 20.1 mA cm−2 under one sun illumination in OTP devices with a vertical architecture, which is four orders of magnitude larger than that measured in other ferroelectric photovoltaic devices10,11.
Oct 31, 2014· Also, we recently reported the effect of poling on the photovoltaic properties of highly oriented BiFeO 3 thin films. 8 The switchable photocurrent is strongly affected by the electrode interface, as observed by Choi et al. 9 in BFO single crystal.
The demonstration of switchable OTP photovoltaics and electric-field-manipulated doping paves the way for innovative solar cell designs and for the exploitation of OTP materials in electrically...
Dec 21, 2016· Herein, we report the discovery of a switchable photovoltaic effect, that the sign of the open voltage and the short circuit current can be reversed by inverting the polarity of the applied field, upon electrically tailoring the distribution of oxygen vacancies in
Aug 22, 2019· The bulk photovoltaic effect (BPVE) rectifies light into the dc current in a single-phase material and attracts the interest to design high-efficiency solar cells beyond the pn
which confirms that the switchable photovoltaic effect originates from theremnant polarization. Furthermore, the positive and negative polar states produce almost symmetrical outputs with opposite signs, sug-gesting insignificant influence from the asymmetric top and bottom electrical contacts. As summarized in Fig. 2D, both V
Jan 1, 2022· 9 - Switchable photovoltaic effect in solar cells: Architecture, features, and future scope. Author links open overlay panel M.S. Jyothi a b, R. Shwetharani a, Sabarish Radoor c, R. Geetha Balakrishna a. The evolution of photovoltaic devices, developments with open challenges, and future opportunities are analyzed and elaborated along with
Oct 19, 2020· The anomalous photovoltaic effect and resistive switching behaviors in ferroelectric materials attract much attention in recent years. Dozens of researches revealed that the two effects coexist and affect each other in electrode/ferroelectric/electrode structures. Therefore, the conductive mechanisms and research progresses of the two effects were discussed in this
Aug 19, 2024· The photovoltaic effect in epitaxial BFO thin films is studied and an open-circuit voltage Voc of 0.3 V is obtained, demonstrating that photocurrent direction can be switched by the polarization direction of the BFO film and that the ferroelectric polarization is the main driving force of the observed photov Holtaic effect.
Dec 8, 2014· This field-switchable photovoltaic effect can be explained by the formation of reversible p–i–n structures induced by ion drift in the perovskite layer. Furthermore, the
Apr 15, 2015· Enhanced photovoltaic effects are demonstrated in an In 2 O 3-SnO 2 /BiFe 0.6 Sc 0.4 O 3 /LaNiO 3 (ITO/BFSO/LNO) ferroelectric thin film heterostructure. The Sc-substitution greatly improves the bulk conductivity of BiFeO 3 (BFO) and modifies the energy band alignment in the ITO/BFSO/LNO capacitor structure, where a tunable Schottky-to-Ohmic contact at the
Jun 17, 2011· Mechanism of the Switchable Photovoltaic Effect in Ferroelectric BiFeO 3. H. T. Yi, H. T. Yi. Rutgers Center for Emergent Materials, Dept. Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA This switchable photocurrent and diode effect results from the combination of polarization flipping and electromigration of oxygen
Here, we present a new class of FPVs by demonstrating switchable ferroelectric photovoltaic effects and narrow band-gap properties using hexagonal ferrite (h-RFeO 3) thin films, where R denotes rare-earth ions. FPVs with narrow band gaps suggest their potential applicability as photovoltaic and optoelectronic devices.
Dec 8, 2014· This field-switchable photovoltaic effect can be explained by the formation of reversible p–i–n structures induced by ion drift in the perovskite layer. Furthermore, the demonstration of switchable OTP photovoltaics and electric-field-manipulated doping paves the way for innovative solar cell designs and for the exploitation of OTP
reversibly switchable photovoltaic effect by changing the polarization direction with the aid of a bias electric field [8-11]. Until recently, the FPV effect has remained as an academic interest rather than having practical applications owing to extremely low photocurrent densities of FPVs in the order of nA∙cm-2 ∼ μA∙cm-2 [9-13]. The
Oct 17, 2024· Comment on "Octahedral Distortion and Displacement-Type Ferroelectricity with Switchable Photovoltaic Effect in a 3 d 3-Electron Perovskite System" Alexei A. Belik Phys. Rev. Lett. 133, 169601 – Published 17 October 2024
The bulk photovoltaic effect (BPVE) rectifies light into the dc current in a single-phase material and attracts the interest to design high-efficiency solar cells beyond the pn junction paradigm. Because it is a hot electron effect, the BPVE surpasses the thermodynamic Shockley–Queisser limit to generate above-band-gap photovoltage.
Jul 5, 2018· The effect of heavy metal cation (Bi) transmutation and ionic migration on the defects and carrier properties in a 2D layered perovskite (NH4)3(Sb(1−x) Bix)2I9 system is investigated. Doping and Switchable Photovoltaic Effect in Lead-Free Perovskites Enabled by Metal Cation Transmutation. Padinhare Cholakkal Harikesh,
Jan 1, 2022· We use a thin film photovoltaic layer stack based on an amorphous germanium absorber layer and combine it with a thin Mg/Pd mirror to create a switchable solar cell.
This field-switchable photovoltaic e˙ect can be explained by the formation of reversible p–i–n structures induced by ion drift in the perovskite layer. The demonstration of switchable
Apr 23, 2019· A switchable PV effect is detected at RT with a clear dominant ferroelectric origin over defects migration and interface effects. At low temperatures, above band-gap V oc value of −4.5 V is observed strongly supporting the bulk non-centrosymmetric PV effect.
Oct 8, 2014· We report the switchable photovoltaic effects in graphene/BiFeO 3 /Pt heterostructures. Pure phase polycrystalline BiFeO 3 films were deposited on Pt/TiO 2 /SiO 2 /Si substrates by pulse laser deposition. A bilayer graphene was transferred onto the BiFeO 3 film which serves as transparent conducting electrodes. The heterostructures showed switchable
Oct 20, 2024· Hybrid organic–inorganic molecular ferroelectrics (HOIMFs) have garnered significant attention for their potential applications in nonvolatile memory and spintronic devices. However, few efforts have been devoted to the photoelectric properties of lead halide molecular ferroelectrics, despite the fact that robust ferroelectricity and flexibility are desirable for thin-film
In contrast to switchable photovoltaics using bismuth ferrite materials, with JSC typically of the order of ~μA cm −2 (refs 10, 11), JSC for the OTP devices switched between 18.6 and −20.1 mA cm −2 (Fig. 1c) under one sun illumination, which is comparable to that of optimized perovskite solar cells 1, 2, 3, 4, 5, 13.
Aug 19, 2024· Here we report that a popular all-inorganic halide perovskite nanocrystal, CsPbBr 3, exhibits a ferroelectricity-driven photovoltaic effect under visible light in the absence of an
This field-switchable photovoltaic e˙ect can be explained by the formation of reversible p–i–n structures induced by ion drift in the perovskite layer. The demonstration of switchable OTP photovoltaics and electric-field-manipulated doping paves the way for innovative solar cell designs and for the
Feb 12, 2020· A better control over processes responsible for the photocurrent generation in semiconductors and nanocomposites is essential in the fabrication of photovoltaic devices, efficient photocatalysts
Jul 6, 2018· In contrast, those films in antipolar/nonpolar states show negligible photovoltaic output, which confirms that the switchable photovoltaic effect originates from the remnant polarization. Furthermore, the positive and negative polar states produce almost symmetrical outputs with opposite signs, suggesting insignificant influence from the
Apr 4, 2023· More interestingly, a prominent net photocurrent and switchable photovoltaic effect with a sustainable photoresponse were observed in the current polycrystalline HPMO. This Letter provides an exceptional ${d}^{3}$ material system which shows unusually large octahedral distortion and displacement-type ferroelectricity violating the ``${d}^{0
Jan 1, 2022· The switchable photovoltaic (photocurrent) effect in PVSC is generally attributed to ion migration (cations/anions), the work function of the hole transporting layer, and the band
Dec 18, 2020· This optoelectronic logic device shows promising characteristics of output dark current <1 pA, on/off current ratio >10 5, switching time <10 µs, broadband operation in the
Consequently, the photovoltaic effect in the heterojunction is switchable by the gate voltage, enabling a novel self-driven optoelectronic logic element without the need of external biasing.
Oct 31, 2023· The limited sensitivity of photovoltaic-type photodiodes makes it indispensable to use pre-amplifier circuits for effectively extracting electrical signals, especially when detecting dim light.
As the photovoltaic (PV) industry continues to evolve, advancements in switchable photovoltaic effect have become critical to optimizing the utilization of renewable energy sources. From innovative battery technologies to intelligent energy management systems, these solutions are transforming the way we store and distribute solar-generated electricity.
When you're looking for the latest and most efficient switchable photovoltaic effect for your PV project, our website offers a comprehensive selection of cutting-edge products designed to meet your specific requirements. Whether you're a renewable energy developer, utility company, or commercial enterprise looking to reduce your carbon footprint, we have the solutions to help you harness the full potential of solar energy.
By interacting with our online customer service, you'll gain a deep understanding of the various switchable photovoltaic effect featured in our extensive catalog, such as high-efficiency storage batteries and intelligent energy management systems, and how they work together to provide a stable and reliable power supply for your PV projects.
Enter your inquiry details, We will reply you in 24 hours.
