Bandgap tuning of multiferroic oxide solar cells

Nechache, Riad; Harnagea, Cătălin; Li, Shun; Cárdenas, Luis; Huang, Wei; Chakrabartty, Joyprokash; Rosei, Federico

doi:10.1038/nphoton.2014.255

Cited by 694 publications

(622 citation statements)

References 35 publications

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“…78,79 Among narrow-band-gap metal oxide ferroelectric perovskites, Bi 2 FeCrO 6 has been recently found to exhibit large photocurrent in its photovoltaic performance. 80 Therefore, ferroelectric photovoltaics is becoming a new topic in energy conversion and optoelectronics. Figure 10 shows how amplified photoconductive current is generated in the planarstructured perovskite layer, which undergoes ferroelectric polarization under external reverse bias.…”

Section: ¹2mentioning

confidence: 99%

Perovskite Photovoltaics: Rare Functions of Organo Lead Halide in Solar Cells and Optoelectronic Devices

2015

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Section: ¹2mentioning

confidence: 99%

Perovskite Photovoltaics: Rare Functions of Organo Lead Halide in Solar Cells and Optoelectronic Devices

2015

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“…In fact, earlier efforts to make use of these materials as photovoltaics yielded a very small efficiency due to low optical absorption. [15] More recently, aliovalent doping in KNbO 3 [16,17] and modification of the site population or cation ratio in multiferroic Bi 2 FeCrO 6 [ 18 ] is used to engineer absorption properties of ferroelectric materials and to enhance their light-to-electricity conversion efficiency. In particular, the power conversion efficiency in multilayer multiferroic Bi 2 FeCrO 6 solar cells is found to reach 8.1% [18] , which is attributed to the low band gap and intrinsic ferroelectricity of the compound.…”

Section: Introductionmentioning

confidence: 99%

Hexagonal rare-earth manganites as promising photovoltaics and light polarizers

et al. 2015

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Ferroelectric materials possess a spontaneous electric polarization and may be utilized in various technological applications ranging from non-volatile memories to solar cells and light polarizers. Recently, hexagonal rare-earth manganites, h-RMnO 3 (R is a rare-earth ion) have attracted considerable interest due to their intricate multiferroic properties and improper ferroelectricity characterized by a sizable remnant polarization and high Curie temperature.Here, we demonstrate that these compounds can serve as very efficient photovoltaic materials and, in addition, possess remarkable optical anisotropy properties. Using first-principles methods based on density-functional theory and considering h-TbMnO 3 as a representative manganite, we predict a strong light absorption of this material in the solar spectrum range, resulting in the maximum light-to-electricity energy conversion efficiency up to 33%. We also predict an extraordinary optical linear dichroism and linear birefringence properties of hTbMnO 3 in a broad range of optical frequencies. These results uncover the unexplored potential of hexagonal rare-earth manganites to serve as photovoltaics in solar cells and as absorptive and birefringent light polarizers.

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“…The coexistence of photo-activated electron hole generation and an intrinsic electric field offers the opportunity for simultaneous charge carrier generation and separation in the bulk material. There has been success in the application of ferroelectric perovskite oxides, 21 and suggestions that the polarisation of hybrid perovskites contributes to their high-performance. [22][23][24] We discussed the physics underpinning photoactive ferroelectrics in a recent perspective review, which also looked at the V-VI-VII semiconductors as an interesting case study.…”

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Quasi-particle electronic band structure and alignment of the V-VI-VII semiconductors SbSI, SbSBr, and SbSeI for solar cells

Butler

McKechnie

Azarhoosh

et al. 2016

Applied Physics Letters

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The ternary V-VI-VII chalcohalides consist of one cation and two anions. Trivalent antimony—with a distinctive 5s2 electronic configuration—can be combined with a chalcogen (e.g., S or Se) and halide (e.g., Br or I) to produce photoactive ferroelectric semiconductors with similarities to the Pb halide perovskites. We report—from relativistic quasi-particle self-consistent GW theory—that these materials have a multi-valley electronic structure with several electron and hole basins close to the band extrema. We predict ionisation potentials of 5.3–5.8 eV from first-principles for the three materials, and assess electrical contacts that will be suitable for achieving photovoltaic action from these unconventional compounds

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Bandgap tuning of multiferroic oxide solar cells

Cited by 694 publications

References 35 publications

Perovskite Photovoltaics: Rare Functions of Organo Lead Halide in Solar Cells and Optoelectronic Devices

Perovskite Photovoltaics: Rare Functions of Organo Lead Halide in Solar Cells and Optoelectronic Devices

Hexagonal rare-earth manganites as promising photovoltaics and light polarizers

Quasi-particle electronic band structure and alignment of the V-VI-VII semiconductors SbSI, SbSBr, and SbSeI for solar cells

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