Erratum: Power conversion efficiency exceeding the Shockley–Queisser limit in a ferroelectric insulator

Spanier, Jonathan E.; Fridkin, V. M.; Rappe, Andrew M.; Akbashev, Andrew R.; Polemi, A.; Qi, Yubo; Gu, Zhiqi; Young, Steve M.; Hawley, Christopher J.; Imbrenda, Dominic; Xiao, Geoffrey; Bennett-Jackson, Andrew L.; Johnson, Craig

doi:10.1038/nphoton.2016.188

Cited by 13 publications

(30 citation statements)

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“…Each bandgap corresponds to an S–Q limit. The bandgap of 1.34 eV gives the largest possible S–Q limit of 33.7% . Research into photovoltaic materials strives to approach as closely to this limit as possible.…”

Section: Development Of Single‐source Energy Harvestersmentioning

confidence: 99%

“…In addition, the ABO 3 perovskites have shown a widely tunable range of bandgaps (1.1–2.0 eV) which are suitable for visible light absorption and harvesting . More recently, it has been found that an ABO 3 perovskite—BTO—is able to exhibit a η photo which exceeds the S–Q limit despite the fact that the bandgap of BTO is greater than 3 eV so that less than 10% of the energy in the solar spectrum is absorbed . This is because the bulk photovoltaic effect (BPVE) in noncentrosymmetric crystals, e.g., tetragonal BTO, results from the photoexited nonthermalized electrons losing their energy and descending to the bottom of the band .…”

Section: Development Of Single‐source Energy Harvestersmentioning

confidence: 99%

“…More recently, it has been found that an ABO 3 perovskite—BTO—is able to exhibit a η photo which exceeds the S–Q limit despite the fact that the bandgap of BTO is greater than 3 eV so that less than 10% of the energy in the solar spectrum is absorbed . This is because the bulk photovoltaic effect (BPVE) in noncentrosymmetric crystals, e.g., tetragonal BTO, results from the photoexited nonthermalized electrons losing their energy and descending to the bottom of the band . In comparison, in conventional solar cells the high η photo relies on strong absorption of the energy in the solar spectrum to promote the carrier movement in the band .…”

Section: Development Of Single‐source Energy Harvestersmentioning

confidence: 99%

“…This is because the bulk photovoltaic effect (BPVE) in noncentrosymmetric crystals, e.g., tetragonal BTO, results from the photoexited nonthermalized electrons losing their energy and descending to the bottom of the band . In comparison, in conventional solar cells the high η photo relies on strong absorption of the energy in the solar spectrum to promote the carrier movement in the band . Details are given in Section .…”

Section: Development Of Single‐source Energy Harvestersmentioning

confidence: 99%

“…The BPVE is defined as that photocurrent (short‐circuit boundary condition) or photovoltage (open‐circuit boundary condition) that is raised in crystals or polycrystalline media under illumination in the range of intrinsic and extrinsic absorption . In practice, the BPVE (also known as the anomalous photovoltaic effect) can be observed in 20 specific point groups of crystals, which lack an inversion symmetry center (e.g., ferroelectrics and piezoelectrics) . For instance, the above‐mentioned BTO, PZT, KNN, BNT‐BTO, and ZnO can all exhibit the BPVE.…”

Section: Multifunctional Materials For Multisource Energy Harvestingmentioning

confidence: 99%

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Energy Harvesting Research: The Road from Single Source to Multisource

2018

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Energy harvesting technology may be considered an ultimate solution to replace batteries and provide a long-term power supply for wireless sensor networks. Looking back into its research history, individual energy harvesters for the conversion of single energy sources into electricity are developed first, followed by hybrid counterparts designed for use with multiple energy sources. Very recently, the concept of a truly multisource energy harvester built from only a single piece of material as the energy conversion component is proposed. This review, from the aspect of materials and device configurations, explains in detail a wide scope to give an overview of energy harvesting research. It covers single-source devices including solar, thermal, kinetic and other types of energy harvesters, hybrid energy harvesting configurations for both single and multiple energy sources and single material, and multisource energy harvesters. It also includes the energy conversion principles of photovoltaic, electromagnetic, piezoelectric, triboelectric, electrostatic, electrostrictive, thermoelectric, pyroelectric, magnetostrictive, and dielectric devices. This is one of the most comprehensive reviews conducted to date, focusing on the entire energy harvesting research scene and providing a guide to seeking deeper and more specific research references and resources from every corner of the scientific community.

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Section: Development Of Single‐source Energy Harvestersmentioning

confidence: 99%

Section: Development Of Single‐source Energy Harvestersmentioning

confidence: 99%

Section: Development Of Single‐source Energy Harvestersmentioning

confidence: 99%

Section: Development Of Single‐source Energy Harvestersmentioning

confidence: 99%

Section: Multifunctional Materials For Multisource Energy Harvestingmentioning

confidence: 99%

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Energy Harvesting Research: The Road from Single Source to Multisource

2018

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Ferroelectric Photovoltaic Materials and Devices

Han

Yang

2021

Adv Funct Materials

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Ferroelectric materials have been a focus of much research over the last few decades for their unique piezoelectric and optoelectronic properties. Conventional solar cells have been devised based on the photovoltaic effect of semiconductor p–n junctions, with their photogenerated voltage being influenced by the bandgap of the semiconductors, limiting their further development. Ferroelectric photovoltaics have attracted attention for their unusual photovoltaic effect and controllability. The photogenerated voltage that is independent of bandgap along the polarization direction can be generated in ferroelectric materials, undoubtedly making up for the lack of solar cells. Ferroelectric materials have been used in a wide range of piezoelectric, storage, sensor, and optoelectronic because of their unique optical and electrical properties. However, the small photogenerated current of ferroelectric photovoltaic devices is one of the challenges that need to be overcome. Researchers have shown that the photogenerated current of ferroelectric photovoltaic devices can be significantly improved by cation doping and heterostructure construction, reigniting the enthusiasm for the investigation of ferroelectric photovoltaics. This paper reviews a variety of ferroelectric photovoltaic materials, the mechanism of ferroelectric photovoltaics, approaches for improving ferroelectric photovoltaic performance, and the applications and future prospects for ferroelectric materials.

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Boosting Photovoltaic Output of Ferroelectric Ceramics by Optoelectric Control of Domains

et al. 2018

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Photo‐ferroelectric single crystals and highly oriented thin‐films have been extensively researched recently, with increasing photovoltaic energy conversion efficiency (from 0.5% up to 8.1%) achieved. Rare attention has been paid to polycrystalline ceramics, potentially due to their negligible efficiency. However, ceramics offer simple and cost‐effective fabrication routes and stable performance compared to single crystals and thin‐films. Therefore, a significantly increased efficiency of photo‐ferroelectric ceramics contributes toward widened application areas for photo‐ferroelectrics, e.g., multisource energy harvesting. Here, all‐optical domain control under illumination, visible‐range light‐tunable photodiode/transistor phenomena and optoelectrically tunable photovoltaic properties are demonstrated, using a recently discovered photo‐ferroelectric ceramic (K0.49Na0.49Ba0.02)(Nb0.99Ni0.01)O2.995. For this monolithic material, tuning of the electric conductivity independent of the ferroelectricity is achieved, which previously could only be achieved in organic phase‐separate blends. Guided by these discoveries, a boost of five orders of magnitude in the photovoltaic output power and energy conversion efficiency is achieved via optical and electrical control of ferroelectric domains in an energy‐harvesting circuit. These results provide a potentially supplementary approach and knowledge for other photo‐ferroelectrics to further boost their efficiency for energy‐efficient circuitry designs and enable the development of a wide range of optoelectronic devices.

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Erratum: Power conversion efficiency exceeding the Shockley–Queisser limit in a ferroelectric insulator

Abstract: In the version of this Article originally published, in Fig. 3a, the units on the left-hand y axis were incorrect; they should have read '(A cm © 2 0 1 6 M a c m i l l a n P u b l i s h e r s L i m i t e d , p a r t o f S p r i n g e r N a t u r e . A l l r i g h t s r e s e r v e d .

Cited by 13 publications

References 1 publication

Energy Harvesting Research: The Road from Single Source to Multisource

Energy Harvesting Research: The Road from Single Source to Multisource

Ferroelectric Photovoltaic Materials and Devices

Boosting Photovoltaic Output of Ferroelectric Ceramics by Optoelectric Control of Domains

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