Structure of disordered lead indoniobate PbIn1/2Nb1/2O3

We propose B-site Bi 5+ -doped ferroelectric perovskite materials as suitable candidates for the bulk photovoltaic effect and related solar applications. The low-lying 6s empty states of the electronegative Bi atom produce empty bands in the energy gap of the parent materials, effectively lowering the band gap by 1-2 eV, depending on the composition of the ferroelectric end member and the concentration of Bi 5+ in the solid solution. The polarization decreases but survives upon doping, which enables the "shift current" mechanism for photocurrent generation, while the decreased band gap allows absorption of much of the visible spectrum. The magnitude of shift current response is calculated for 0.75Pb 2 InNbO 6 -0.25Ba 2 InBiO 6 (PIN-BIB) and 0.75Pb 2 ScNbO 6 -0.25Sr 2 ScBiO 6 (PSN-SSB) and is predicted to exceed the visible light bulk photovoltaic response of all previously reported materials, including BiFeO 3 . Furthermore, the existence of their intermediate bands and multiple band gaps, combined with Fermi level tuning by A-site co-doping, also allows for their potential application in traditional p − n junction-based solar cells as broadspectrum photoabsorbers.

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Effect of B -site randomness on the antiferroelectric/relaxor nature of the ground state: Diffuse and inelastic x-ray scattering study of Pb(In1/2Nb1/
Ohwada
¹
,
Tsukada
²
,
Fukuda
³

et al. 2018
Phys. Rev. B
4
0
5
0
View full text Add to dashboard Cite

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Structure of disordered lead indoniobate PbIn1/2Nb1/2O3

Cited by 4 publications

References 3 publications

Intrinsic ferroelectric instability inPb(In1∕2Nb1∕2)
Ohwada
¹
,
Hirota
²
,
Terauchi
³

et al. 2008
Phys. Rev. B
23
0
10
0
View full text Add to dashboard Cite

Intrinsic ferroelectric instability inPb(In1∕2Nb1∕2)
Ohwada
¹
,
Hirota
²
,
Terauchi
³

et al. 2008
Phys. Rev. B
23
0
10
0
View full text Add to dashboard Cite

Semiconducting ferroelectric perovskites with intermediate bands viaB-siteBi5+doping

Effect of B -site randomness on the antiferroelectric/relaxor nature of the ground state: Diffuse and inelastic x-ray scattering study of Pb(In1/2Nb1/
Ohwada
¹
,
Tsukada
²
,
Fukuda
³

et al. 2018
Phys. Rev. B
4
0
5
0
View full text Add to dashboard Cite

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Structure of disordered lead indoniobate PbIn1/2Nb1/2O3

Cited by 4 publications

References 3 publications

Intrinsic ferroelectric instability inPb(In1∕2Nb1∕2)Ohwada1, Hirota2, Terauchi3 et al. 2008Phys. Rev. B230100View full textAdd to dashboardCite

Intrinsic ferroelectric instability inPb(In1∕2Nb1∕2)Ohwada1, Hirota2, Terauchi3 et al. 2008Phys. Rev. B230100View full textAdd to dashboardCite

Semiconducting ferroelectric perovskites with intermediate bands viaB-siteBi5+doping

Effect of B -site randomness on the antiferroelectric/relaxor nature of the ground state: Diffuse and inelastic x-ray scattering study of Pb(In1/2Nb1/Ohwada1, Tsukada2, Fukuda3 et al. 2018Phys. Rev. B4050View full textAdd to dashboardCite

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Intrinsic ferroelectric instability inPb(In1∕2Nb1∕2)
Ohwada
¹
,
Hirota
²
,
Terauchi
³

et al. 2008
Phys. Rev. B
23
0
10
0
View full text Add to dashboard Cite

Intrinsic ferroelectric instability inPb(In1∕2Nb1∕2)
Ohwada
¹
,
Hirota
²
,
Terauchi
³

et al. 2008
Phys. Rev. B
23
0
10
0
View full text Add to dashboard Cite

Effect of B -site randomness on the antiferroelectric/relaxor nature of the ground state: Diffuse and inelastic x-ray scattering study of Pb(In1/2Nb1/
Ohwada
¹
,
Tsukada
²
,
Fukuda
³

et al. 2018
Phys. Rev. B
4
0
5
0
View full text Add to dashboard Cite