Journal ArticleDOI
Planar Heterojunction Perovskite Solar Cells via Vapor-Assisted Solution Process
Qi Chen,Huanping Zhou,Ziruo Hong,Song Luo,Hsin Sheng Duan,Hsin-Hua Wang,Yongsheng Liu,Gang Li,Yang Yang +8 more
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TLDR
A low-temperature vapor-assisted solution process is demonstrated to construct polycrystalline perovskite thin films with full surface coverage, small surface roughness, and grain size up to microscale, paving the way for high reproducibility of films and devices.Abstract:
Hybrid organic/inorganic perovskites (e.g., CH3NH3PbI3) as light absorbers are promising players in the field of third-generation photovoltaics. Here we demonstrate a low-temperature vapor-assisted solution process to construct polycrystalline perovskite thin films with full surface coverage, small surface roughness, and grain size up to microscale. Solar cells based on the as-prepared films achieve high power conversion efficiency of 12.1%, so far the highest efficiency based on CH3NH3PbI3 with the planar heterojunction configuration. This method provides a simple approach to perovskite film preparation and paves the way for high reproducibility of films and devices. The underlying kinetic and thermodynamic parameters regarding the perovskite film growth are discussed as well.read more
Citations
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Investigation on Organic Molecule Additive for Moisture Stability and Defect Passivation via Physisorption in CH3NH3PbI3 Based Perovskite
Shivam Singh,Bosky Sharma,Gangadhar Banappanavar,Amrita Dey,Sudip Chakraborty,K. L. Narasimhan,Parag Bhargava,Dinesh Kabra +7 more
TL;DR: The role of bathocuproine (BCP) additive in perovskite semiconductor film based solar cells using first principle calculations and optoelectronic studies is investigated in this paper.
Journal ArticleDOI
Ab initio modeling of 2D layered organohalide lead perovskites
TL;DR: A number of 2D layered perovskites A2PbI 4 and BPbI4, with A and B mono- and divalent ammonium and imidazolium cations, have been modeled with different theoretical methods, and various contributions to the computed band gaps have been discussed on some of the studied systems.
Journal ArticleDOI
Performance enhancement of solution processed perovskite solar cells incorporating functionalized silica nanoparticles
Matthew J. Carnie,Cecile Charbonneau,Matthew L. Davies,Brian C. O"Regan,Brian C. O"Regan,David A. Worsley,Trystan Watson +6 more
TL;DR: In this article, the 3-aminopropyl (3-oxobutanoic acid) functionalized silica nanoparticles (f-SiO2) have been used in planar heterojunction (PHJ) devices.
Journal ArticleDOI
Deposition Kinetics and Compositional Control of Vacuum-Processed CH3NH3PbI3 Perovskite.
TL;DR: The sublimation properties of CH3NH3I are studied in detail and it is demonstrated that by correcting for its complex adsorption properties and by modeling the film growth, accurate predictions about the stoichiometry of the final perovskite film can be obtained.
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
Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
Michael M. Lee,Joël Teuscher,Tsutomu Miyasaka,Takurou N. Murakami,Takurou N. Murakami,Henry J. Snaith +5 more
TL;DR: A low-cost, solution-processable solar cell, based on a highly crystalline perovskite absorber with intense visible to near-infrared absorptivity, that has a power conversion efficiency of 10.9% in a single-junction device under simulated full sunlight is reported.
Journal ArticleDOI
Sequential deposition as a route to high-performance perovskite-sensitized solar cells
Julian Burschka,Norman Pellet,Norman Pellet,Soo-Jin Moon,Robin Humphry-Baker,Peng Gao,Mohammad Khaja Nazeeruddin,Michael Grätzel +7 more
TL;DR: A sequential deposition method for the formation of the perovskite pigment within the porous metal oxide film that greatly increases the reproducibility of their performance and allows the fabrication of solid-state mesoscopic solar cells with unprecedented power conversion efficiencies and high stability.
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.