A one-step low temperature processing route for organolead halide perovskite solar cells

Carnie, Matthew J.; Charbonneau, Cécile; Davies, Matthew L.; Troughton, Joel; Watson, Trystan; Wojciechowski, Konrad; Snaith, Henry J.; Worsley, David

doi:10.1039/c3cc44177f

Cited by 222 publications

(175 citation statements)

References 17 publications

(17 reference statements)

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“…− cage have formal electronic configurations of Pb: 5d 10 6s 2 6p 0 and I: 5p 6 . As can be seen from the colour coding, the valence band maximum consists of approximately 70% I 5p and 25% Pb 6s (the Pb 6s forms a band centred around −8 eV), while the conduction band consists a mixture of Pb 6p and other orbitals.…”

Section: A Band Structurementioning

confidence: 99%

Relativistic quasiparticle self-consistent electronic structure of hybrid halide perovskite photovoltaic absorbers

et al. 2014

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Solar cells based on a light absorbing layer of the organometal halide perovskite CH 3 NH 3 PbI 3 have recently surpassed 15 % conversion efficiency, though how these materials work remains largely unknown. We analyse the electronic structure and optical properties within the quasiparticle self-consistent GW approximation. While this compound bears some similarity to conventional sp semiconductors, it also displays unique features. Quasiparticle self-consistency is essential for an accurate description of the band structure: band gaps are much larger than what is predicted by the local density approximation (LDA) or GW based on the LDA. Valence band dispersions are modified in a very unusual manner. In addition, spin-orbit coupling strongly modifies the band structure and gives rise to unconventional dispersion relations and a Dresselhaus splitting at the band edges. The average hole mass is small, which partially accounts for the long diffusion lengths observed. The surface ionisation potential (workfunction) is calculated to be 5.7 eV with respect to the vacuum level, explaining efficient carrier transfer to TiO 2 and Au electrical contacts.

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Section: A Band Structurementioning

confidence: 99%

Relativistic quasiparticle self-consistent electronic structure of hybrid halide perovskite photovoltaic absorbers

et al. 2014

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“…[1][2][3][4][5][6] They represent the convergence of inorganic thin-film and dye-sensitised solar cells. 7 The conversion efficiencies have quickly surpassed both those of conventional dye-cells, as well as next-generation thin-film absorbers such as Cu 2 ZnSnS 4 .…”

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confidence: 99%

Structural and electronic properties of hybrid perovskites for high-efficiency thin-film photovoltaics from first-principles

Brivio

Walker²,

Walsh³

2013

APL Materials

570

525

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The performance of perovskite solar cells recently exceeded 15% solar-to-electricity conversion efficiency for small-area devices. The fundamental properties of the active absorber layers, hybrid organic-inorganic perovskites formed from mixing metal and organic halides [e.g., (NH4)PbI3 and (CH3NH3)PbI3], are largely unknown. The materials are semiconductors with direct band gaps at the boundary of the first Brillouin zone. The calculated dielectric constants and band gaps show an orientation dependence, with a low barrier for rotation of the organic cations. Due to the electric dipole of the methylammonium cation, a photoferroic effect may be accessible, which could enhance carrier collection

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“…75 A few researchers crafted a unique low temperature processing technique that incorporates an Al 2 O 3 scaffold in a perovskite material. 76 Figure 10(b) illustrates various architectures investigated and efficiencies achieved for hybrid perovskite solar cells. A few researchers reported that increasing the conductivity of the HTMs by doping and optimizing charge collection by adjusting the absorber thickness could bring a positive impact on PCEs in planar heterojunction-based solar cells.…”

Section: Fabrication Proceduresmentioning

confidence: 99%

Perovskites: transforming photovoltaics, a mini-review

et al. 2015

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Abstract. The recent power-packed advent of perovskite solar cells is transforming photovoltaics (PV) with their superior efficiencies, ease of fabrication, and cost. This perovskite solar cell further boasts of many unexplored features that can further enhance its PV properties and lead to it being branded as a successful commercial product. This article provides a detailed insight of the organometal halide based perovskite structure, its unique stoichiometric design, and its underlying principles for PV applications. The compatibility of various PV layers and its fabrication methods is also discussed.

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A one-step low temperature processing route for organolead halide perovskite solar cells

Cited by 222 publications

References 17 publications

Relativistic quasiparticle self-consistent electronic structure of hybrid halide perovskite photovoltaic absorbers

Relativistic quasiparticle self-consistent electronic structure of hybrid halide perovskite photovoltaic absorbers

Structural and electronic properties of hybrid perovskites for high-efficiency thin-film photovoltaics from first-principles

Perovskites: transforming photovoltaics, a mini-review

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