Journal ArticleDOI
Effect of Electron Transporting Layer on Bismuth-Based Lead-Free Perovskite (CH3NH3)3 Bi2I9 for Photovoltaic Applications
TLDR
The optical measurements showed a strong absorption band around 500 nm, and the devices made on anatase TiO2 mesoporous layer showed good performance with current density over 0.8 mA cm(-2), while the devices on brookiteTiO2 layer and planar (free of porous layer) was inefficient.Abstract:
Methylammonium iodo bismuthate ((CH3NH3)3Bi2I9) (MBI) perovskite is a promising alternative to rapidly progressing hybrid organic–inorganic lead perovskites because of its better stability and low toxicity compared to lead-based perovskites. Solution-processed perovskite fabricated by single-step spin-coating and subsequent heating produced polycrystalline films of hybrid perovskite (CH3NH3)3Bi2I9), whose morphology was influenced drastically by the nature of substrates. The optical measurements showed a strong absorption band around 500 nm. The devices made on anatase TiO2 mesoporous layer showed good performance with current density over 0.8 mA cm–2 while the devices on brookite TiO2 layer and planar (free of porous layer) was inefficient. However, all the MBI devices were stable to ambient conditions for more than 10 weeks.read more
Citations
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Journal ArticleDOI
Halide Perovskite Photovoltaics: Background, Status, and Future Prospects
TL;DR: The fundamentals, recent research progress, present status, and views on future prospects of perovskite-based photovoltaics, with discussions focused on strategies to improve both intrinsic and extrinsic (environmental) stabilities of high-efficiency devices are described.
Journal ArticleDOI
Toward Lead-Free Perovskite Solar Cells
TL;DR: In this paper, the halide double perovskites have been proposed as a solution-processable technology to outperform multicrystalline and thin-film silicon for photovoltaics.
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Cs$_2$InAgCl$_6$: A new lead-free halide double perovskite with direct band gap
George Volonakis,Amir A. Haghighirad,Rebecca L. Milot,Weng Hong Sio,Marina R. Filip,Bernard Wenger,Michael B. Johnston,Laura M. Herz,Henry J. Snaith,Feliciano Giustino +9 more
TL;DR: In this article, the authors proposed a new class of halide double perovskites, where the B$^{3+}$ and B$€ 2+} cations are In$^{2+} and Ag$^{+}, respectively.
Journal ArticleDOI
From Lead Halide Perovskites to Lead-Free Metal Halide Perovskites and Perovskite Derivatives
TL;DR: Reviews on the theoretical understanding of the electronic, optical, and defect properties of Pb and Pb-free halide perovskites andperovskite derivatives are provided, as well as the experimental results available in the literature.
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Searching for promising new perovskite-based photovoltaic absorbers: the importance of electronic dimensionality
TL;DR: In this article, the authors show that perovskite-based solar cells should have a high electronic dimensionality, because of barriers to isotropic current flow, enhanced electron/hole effective masses and fundamentally deeper defect states.
References
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Journal ArticleDOI
Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells
TL;DR: Two organolead halide perovskite nanocrystals were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells, which exhibit strong band-gap absorptions as semiconductors.
Journal ArticleDOI
Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber.
Samuel D. Stranks,Giles E. Eperon,Giulia Grancini,Christopher Menelaou,Marcelo J. P. Alcocer,Tomas Leijtens,Laura M. Herz,Annamaria Petrozza,Henry J. Snaith +8 more
TL;DR: In this article, transient absorption and photoluminescence-quenching measurements were performed to determine the electron-hole diffusion lengths, diffusion constants, and lifetimes in mixed halide and triiodide perovskite absorbers.
Journal ArticleDOI
Efficient planar heterojunction perovskite solar cells by vapour deposition
TL;DR: It is shown that perovskite absorbers can function at the highest efficiencies in simplified device architectures, without the need for complex nanostructures.
Journal Article
Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber
Samuel D. Stranks,Giles E. Eperon,Giulia Grancini,Christopher Menelaou,Marcelo J. P. Alcocer,Tomas Leijtens,Laura M. Herz,Annamaria Petrozza,Henry J. Snaith +8 more
TL;DR: In this paper, transient absorption and photoluminescence-quenching measurements were performed to determine the electron-hole diffusion lengths, diffusion constants, and lifetimes in mixed halide and triiodide perovskite absorbers.
Journal ArticleDOI
Electron-hole diffusion lengths > 175 μm in solution-grown CH3NH3PbI3 single crystals
TL;DR: It is found that the diffusion lengths in CH3NH3PbI3 single crystals grown by a solution-growth method can exceed 175 micrometers under 1 sun (100 mW cm−2) illumination and exceed 3 millimeters under weak light for both electrons and holes.