A bulk photovoltaic effect due to electron-phonon coupling in polar crystals

Chanussot, G.; Glass, A. M.

doi:10.1016/0375-9601(76)90427-8

Cited by 33 publications

(10 citation statements)

References 4 publications

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“…In addition to the asymmetric scattering of free electrons, the Franck-Condon relaxation of excited ions plays a role in the existence of the photovoltaic current. Finally, the Glass model results in a short-circuit photovoltaic current J sc proportional to the intensity I of the monochromatic incident light: [20,21] …”

Section: From the 1950s To The Present: A Brief Review Of The Models mentioning

confidence: 99%

Photovoltaics with Ferroelectrics: Current Status and Beyond

et al. 2016

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Ferroelectrics carry a switchable spontaneous electric polarization. This polarization is usually coupled to strain, making ferroelectrics good piezoelectrics. When coupled to magnetism, they become so-called multiferroic systems, a field that has been widely investigated since 2003. While ferroelectrics are birefringent and non-linear optically transparent materials, the coupling of polarization with optical properties has received, since 2009, renewed attention, triggered notably by low-bandgap ferroelectrics suitable for sunlight spectrum absorption and original photovoltaic effects. Consequently, power conversion efficiencies up to 8.1% were recently achieved and values of 19.5% were predicted, making photoferroelectrics promising photovoltaic alternatives. This article aims at providing an up-to-date review on this emerging and rapidly progressing field by highlighting several important issues and parameters, such as the role of domain walls, ways to tune the bandgap, consequences arising from the polarization switchability, and the role of defects and contact electrodes, as well as the downscaling effects. Beyond photovoltaicity, other polarization-related processes are also described, like light-induced deformation (photostriction) or light-assisted chemical reaction (photostriction). It is hoped that this overview will encourage further avenues to be explored and challenged and, as a byproduct, will inspire other research communities in material science, e.g., so-called hybrid halide perovskites.

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Section: From the 1950s To The Present: A Brief Review Of The Models mentioning

confidence: 99%

Photovoltaics with Ferroelectrics: Current Status and Beyond

et al. 2016

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“…According to the frequently cited shi current model, the ferroelectric materials act as a sort of "current-source". 21,33,34,56 The formation of a steady current ( J s )…”

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confidence: 99%

Arising applications of ferroelectric materials in photovoltaic devices

et al. 2014

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The ferroelectric-photovoltaic (FE-PV) device, in which a homogeneous ferroelectric material is used as a light absorbing layer, has been investigated during the past several decades with numerous ferroelectric oxides. The FE-PV effect is distinctly different from the typical photovoltaic (PV) effect in semiconductor p-n junctions in that the polarization electric field is the driving force for the photocurrent in FE-PV devices. In addition, the anomalous photovoltaic effect, in which the voltage output along the polarization direction can be significantly larger than the bandgap of the ferroelectric materials, has been frequently observed in FE-PV devices. However, a big challenge faced by the FE-PV devices is the very low photocurrent output. The research interest in FE-PV devices has been re-spurred by the recent discovery of above-bandgap photovoltage in materials with ferroelectric domain walls, electric switchable diodes and photovoltaic effects, tip-enhanced photovoltaic effects at the nanoscale, and new low-bandgap ferroelectric materials and device design. In this feature article, we reviewed the advance in understanding the mechanisms of the ferroelectric photovoltaic effects and recent progress in improving the photovoltaic device performance, including the emerging approaches of integrating the ferroelectric materials into organic heterojunction photovoltaic devices for very high efficiency PV devices.

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“…Other effects that have been pointed out are excitation of nonthermalized electrons having asymmetric momentum distribution due to crystal asymmetry, delocalized optical transitions in lattice excitation of pyroelectrics [55], spin-orbital splitting of the valence band in gyrotropic media [37], and second-order nonlinear optical interaction known as "shift currents," shown to be the dominating photocurrent cause in ferroelectrics [39,56].…”

Section: Plasmonic Versus Conventional Photogalvanic Effectmentioning

confidence: 97%

Giant Photogalvanic Effect in Noncentrosymmetric Plasmonic Nanoparticles

et al. 2014

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Photoelectric properties of noncentrosymmetric, similarly oriented metallic nanoparticles embedded in a homogeneous semiconductor matrix are theoretically studied. Because of the asymmetric shape of the nanoparticle boundary, photoelectron emission acquires a preferred direction, resulting in a photocurrent flow in that direction when nanoparticles are uniformly illuminated by a homogeneous plane wave. This effect is a direct analogy of the photogalvanic (or bulk photovoltaic) effect known to exist in media with noncentrosymmetric crystal structure, such as doped lithium niobate or bismuth ferrite, but is several orders of magnitude stronger. Termed the giant plasmonic photogalvanic effect, the reported phenomenon is valuable for characterizing photoemission and photoconductive properties of plasmonic nanostructures and can find many uses for photodetection and photovoltaic applications.

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A bulk photovoltaic effect due to electron-phonon coupling in polar crystals

Cited by 33 publications

References 4 publications

Photovoltaics with Ferroelectrics: Current Status and Beyond

Photovoltaics with Ferroelectrics: Current Status and Beyond

Arising applications of ferroelectric materials in photovoltaic devices

Giant Photogalvanic Effect in Noncentrosymmetric Plasmonic Nanoparticles

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