Passivation Properties and Formation Mechanism of Amorphous Halide Perovskite Thin Films

Autor: Katrine L. Svane, Erik C. Garnett, Rishi E. Kumar, Xueying L. Quinn, Philippe Massonnet, Ron M. A. Heeren, Aron Walsh, Susan A. Rigter, Shane R. Ellis, David P. Fenning
Přispěvatelé: Imaging Mass Spectrometry (IMS), RS: M4I - Imaging Mass Spectrometry (IMS), IoP (FNWI), Hard Condensed Matter (WZI, IoP, FNWI)
Jazyk: angličtina
Rok vydání: 2021
Předmět:
DIFFUSION LENGTHS
DYNAMICS
Technology
crystallization
Chemistry
Multidisciplinary
02 engineering and technology
01 natural sciences
09 Engineering
law.invention
law
Electrochemistry
Crystallization
Materials
02 Physical Sciences
Chemistry
Physical
Physics
021001 nanoscience & nanotechnology
Condensed Matter Physics
Electronic
Optical and Magnetic Materials
Chemistry
Formamidinium
LIGHT
Physics
Condensed Matter
Physical Sciences
Science & Technology - Other Topics
photoluminescence
03 Chemical Sciences
0210 nano-technology
Materials science
Passivation
Silicon
nucleation
Materials Science
Halide
chemistry.chemical_element
Materials Science
Multidisciplinary
010402 general chemistry
Physics
Applied
Biomaterials
Nanoscience & Nanotechnology
Thin film
Perovskite (structure)
Science & Technology
halide perovskite
0104 chemical sciences
Amorphous solid
CRYSTALS
amorphous films
Chemical engineering
chemistry
chemical analysis
CELLS
MICROMETER
Zdroj: Advanced Functional Materials, 31(15):2010330. Wiley-VCH Verlag
Rigter, S A, Quinn, X L, Kumar, R E, Fenning, D P, Massonnet, P, Ellis, S R, Heeren, R M A, Svane, K L, Walsh, A & Garnett, E C 2021, ' Passivation Properties and Formation Mechanism of Amorphous Halide Perovskite Thin Films ', Advanced Functional Materials, vol. 31, no. 15, 2010330 . https://doi.org/10.1002/adfm.202010330
ISSN: 1616-301X
DOI: 10.1002/adfm.202010330
Popis: Lead halide perovskites are among the most exciting classes of optoelectronic materials due to their unique ability to form high-quality crystals with tunable bandgaps in the visible and near-infrared using simple solution precipitation reactions. This facile crystallization is driven by their ionic nature; just as with other salts, it is challenging to form amorphous halide perovskites, particularly in thin-film form where they can most easily be studied. Here, rapid desolvation promoted by the addition of acetate precursors is shown as a general method for making amorphous lead halide perovskite films with a wide variety of compositions, including those using common organic cations (methylammonium and formamidinium) and anions (bromide and iodide). By controlling the amount of acetate, it is possible to tune from fully crystalline to fully amorphous films, with an interesting intermediate state consisting of crystalline islands embedded in an amorphous matrix. The amorphous lead halide perovskite has a large and tunable optical bandgap. It improves the photoluminescence quantum yield and lifetime of incorporated crystalline perovskite, opening up the intriguing possibility of using amorphous perovskite as a passivating contact, as is currently done in record efficiency silicon solar cells.
Databáze: OpenAIRE
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