It is now generally accepted that there is an intrinsic mechanism that is insensitive to scattering, called shift current, where first-principles calculations can now give highly accurate predictions.
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It is demonstrated that shift current is the dominant mechanism of the bulk photovoltaic effect in BaTiO (3), and the complexity of the response dependence on both external and material parameters suggests applications not only in solar energy conversion, but in photocatalysis and sensor and switch type devices as well.
Jan 21, 2016· Spontaneous polarization in ferroelectric materials leads to their use as photovoltaic devices. Here, the authors show by first-principles calculations how nanolayering of PbTiO3with nickel ions
Jun 1, 2022· FIG. 17. Influencing factors for shift current. (a) The correlation between the polarization difference and the integrated shift vector for a two-band model with a simplified shift current expression. Under these conditions, the integrated shift vector is proportional to the polarization difference. (b) A more realistic material (PbTiO3) shows that in reality, the relation
After it is published, it will be found at Link.)Thebulk photovoltaic effect (BPVE) occurs in solids with broken inversion symmetry and refers to DC current generation due to uniform illumination, without the need of heterostructures or interfaces, a feature that is distinct from the traditional photovoltaic effect.
Mar 1, 2019· With the discovery of photovoltaic (PV) energy conversion efficiencies up to 10% in domain-engineered BiFeO 3 ferroelectric films under above-bandgap illumination (1, 2), research in photoferroelectric phenomena has strongly intensified (3, 4) cause of their polar structure, ferroelectrics display unconventional PV phenomena such as the bulk PV effect (BPVE) (5, 6).
The bulk photovoltaic effect (BPVE) — the generation of electric currents by light in noncentrosymmetric materials in the absence of electric fields and gradients — was intensively investigated at the end of the last century. The outcomes, including all main aspects of this phenomenon, were summarized in reviews and books. A new upsurge of interest in the BPVE
Jun 1, 2022· View a PDF of the paper titled Recent Progress in the Theory of Bulk Photovoltaic Effect, by Zhenbang Dai and Andrew M. Rappe. The bulk photovoltaic effect (BPVE) occurs in
The main response occurs when the laser spot illuminates the centre of the device away from the contacts. Hence, this is a bulk photovoltaic effect. d, Polar plot of Isc in WS 2 nanotube devices. The blue line is a cos (2 θ) fit, where θ is the linear polarization angle of the laser.
The recent progress has shown a promising route to surpass this limit via the bulk photovoltaic effect for crystals without inversion symmetry. Here we report the bulk In theory σ pv ¼ eI
Jun 1, 2022· The bulk photovoltaic effect (BPVE) occurs in solids with broken inversion symmetry and refers to DC current generation due to uniform illumination, without the need of heterostructures or interfaces, a feature that is distinct from the traditional photovoltaic effect. Its existence has been demonstrated almost 50 years ago, but predictive theories only appeared
Jan 18, 2023· The bulk photovoltaic effect (BPVE) occurs in solids with broken inversion symmetry and refers to DC generation due to uniform illumination, without the need of
FIG. 1. Illustration of traditional photovoltaics and bulk photovoltaics. For traditional photovoltaics (upper panel), a heterojunction is needed where the built-in electric field can separate the photoexcited carriers. The bulk photovoltaic effect (lower panel), on the other hand, can occur in a homogeneous material lacking inversion symmetry. - "Recent progress in the theory of bulk
Recent progress of bulk photovoltaic effect in acentric single crystals and optoelectronic devices Yangyang Dang1,*and Xutang Tao2 3 SUMMARY Acentric materials with bulk photovoltaic effect (BPVE) have recently emerged as a class of promising optoelectronic materials due to broken inversion symmetry. In this review, we mainly aim
Mar 1, 2023· 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
May 12, 2022· The bulk photovoltaic effect (BPVE) is a promising optoelectronic phenomenon that produces a steady-state photocurrent in homogeneous bulk materials without the application of an electric field. In principle, the BPVE is
A theory is presented for the intrinisic anomalous bulk photovoltaic effect observed in noncentrosymmetric crystals, e.g., BaTi${mathrm{O}}_{3}$. An exact formula is derived for the calculation of the short-circuit photovoltaic current in a pure crystal in terms of its Bloch states and energy bands. Unlike a conventional field or diffusion current, the photovoltaic current is
Sep 21, 2020· The bulk photovoltaic effect (BPVE) is a mechanism of recent focus for novel solar cells that exceed the power conversion efficiency of p–n junction solar cells because of the quantum mechanical
Sep 7, 2022· Acentric materials with bulk photovoltaic effect (BPVE) have recently emerged as a class of promising optoelectronic materials due to broken inversion symmetry. In this review, we mainly aim to provide a comprehensive
The bulk photovoltaic effect (BPVE), a second-order nonlinear effect that converts light into electricity in solids, has attracted a great deal of interest for power conversion applications and it has been assumed that BPVE can lead to more efficient solar cells. However, the overall efficiency of such devices should be comprehensively understood.
Sep 7, 2022· Acentric materials with bulk photovoltaic effect (BPVE) have recently emerged as a class of promising optoelectronic materials due to broken inversion symmetry. In this review,
May 12, 2022· The bulk photovoltaic effect (BPVE) is a promising optoelectronic phenomenon that produces a steady-state photocurrent in homogeneous bulk materials without the application of an electric field. In principle, the BPVE is allowed to be observed in noncentrosymmetric systems. However, guidelines on the effectiveness of crystal symmetry for the BPVE, such as
Jun 2, 2022· The bulk photovoltaic effect (BPVE) occurs in solids with broken inversion symmetry and refers to DC current gener-ation due to uniform illumination, without the need of
Nov 22, 2022· The bulk photovoltaic effect (BPVE) is an alternative mechanism for photoelectrical conversion that can occur in homogenous systems even without built-in electric fields 3 was first observed in
Jul 11, 2023· The spin photovoltaic effect (SPVE) is the spin counterpart of the bulk photovoltaic effect (BPVE), where the photocurrent is spin-polarized. This effect can generate spin current in a contactless and ultra-fast way. Recently, SPVE has garnered significant interest due to its potential application in AFM spintronics and rich physical content
Mar 1, 2023· View article titled, Recent progress in the theory of bulk photovoltaic effect. Open the PDF for in another window. Quantum dots: Another choice to sensitize organic transformations. Recent progress in the theory of bulk photovoltaic effect. Zhenbang Dai, Andrew M. Rappe.
Oct 28, 2024· The field of bulk effect photovoltaic theory has advanced to the experimental stage, leading to the next generation of solar cells. "Recent progress in the theory of bulk photovoltaic effect
Jan 26, 2021· The bulk photovoltaic effect in noncentrosymmetric materials is an intriguing physical phenomenon that holds potential for high-efficiency energy harvesting. Here, we study the shift current bulk photovoltaic effect in the transition-metal dichalcogenide MoS2. We present a simple automated method to guide materials design and use it to uncover a distortion to
Mar 16, 2023· The bulk photovoltaic effect (BPVE) leads to directed photocurrents and photovoltages in bulk materials. Unlike photovoltages in p-n junction solar cells that are limited by carrier recombination to values below the band-gap energy of the absorbing material, BPVE photovoltages have been shown to greatly exceed the band-gap energy. Therefore, the BPVE
The theory and the experimental characteristics of the bulk photovoltaic effect in ferroelectric and piezoelectric crystals first observed at the Institute of Crystallography have been reviewed. I dedicate this review to the memory of B.K. Vainshtein whose help in performing these works was really inestimable.
Sep 1, 2022· The bulk photovoltaic effect is a second-order nonlinear photoelectric response, which refers to a phenomenon that non-centrosymmetric structural material generates a steady-state photocurrent
Jun 11, 2024· The photovoltaic (PV) effect is a process by which materials or interfaces under light illumination generate voltages and electric currents. Because of the growing demand for sustainable energy supply and light communication, the importance of PV technologies is continuously increasing. 1) While semiconductor pn junctions are the most familiar devices
PROGRESS AND POTENTIAL Bulk photovoltaic effect (BPVE) possesses great significance in material and physical sciences. Here, efforts are made to systematically summarize the recent advancement of BPVE. A deep understanding of origins, principles, related crystal structures, and optoelectronic device applications of BPVE in the acentric
This work theoretically study the bulk photovoltaic effect in Anderson insulators and shows numerically that it occurs in a noncentrosymmetric, disordered, one-dimensional insulator
Apr 1, 2020· Here, I is the light intensity, e is the unit polarization vector, κ = i(e × e *), while and are two photovoltaic tensors with the respective symmetries of piezo- and gyration tensors. This definition uses nothing but symmetry considerations. The first contribution to j is nonzero for the linear polarization (e = e *); it corresponds to the so-called linear BPVE.
Jun 1, 2022· Recent Progress in the Theory of Bulk Photovoltaic Effect 1 Jun 2022 and a significant portion is devoted to discussing the recent progress in the theories of BPVE and their numerical implementations. As a demonstration of the capability of the newly developed theories, a brief review of the materials design strategies enabled by the theory
Sep 27, 2024· Given the surpassing of the Shockley-Quiesser efficiency limit in conventional p-n junction photovoltaic effect, bulk photovoltaic effect (BPVE) has garnered significant research interest. However
Jul 31, 2024· The growth of layered 2D compounds is a key ingredient in finding new phenomena in quantum materials, optoelectronics, and energy conversion. Here, we report SnP 2 Se 6, a van der Waals chiral (R3 space group) semiconductor with an indirect bandgap of 1.36 to 1.41 electron volts. Exfoliated SnP 2 Se 6 flakes are integrated into high-performance field-effect transistors
The bulk photovoltaic effect (BPVE) occurs in solids with broken inversion symmetry and refers to DC current generation due to uniform illumination, without the need of heterostructures or interfaces, a feature that is distinct from the traditional photovoltaic effect. Its existence has been demonstrated almost 50 years ago, but predictive theories only appeared in the last ten years,
photovoltaic current is essentially determined by the change of wave functions upon photoexcitation of an electron from the valence to the conduction band. Our theory also reveals that the bulk photovoltaic efFect can occur even in pure nonpyroelectric piezoelectric crystals, e.g., Te and GaP, which have no polar axis and therefore no a priori
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