Reflectivity Effects on Pump–Probe Spectra of Lead Halide Perovskites: Comparing Thin Films versus Nanocrystals

ACS Nano ◽  
2018 ◽  
Vol 12 (6) ◽  
pp. 5719-5725 ◽  
Author(s):  
Tufan Ghosh ◽  
Sigalit Aharon ◽  
Adva Shpatz ◽  
Lioz Etgar ◽  
Sanford Ruhman
Keyword(s):  
Thin Films ◽  
Pump Probe ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Comment on “ferroelectricity-free lead halide perovskites” by A. Gómez, Q. Wang, A. R. Goñi, M. Campoy-Quiles and A. Abate, Energy Environ. Sci., 2019, 12, 2537

2020 ◽  
Vol 13 (6) ◽  
pp. 1888-1891
Author(s):  
Alexander Colsmann ◽  
Tobias Leonhard ◽  
Alexander D. Schulz ◽  
Holger Röhm
Keyword(s):  
Thin Films ◽  
Metal Halide ◽  
Organic Metal ◽  
Metal Halide Perovskite ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Energy Environ

This comment analyzes pitfalls when investigating piezoresponse and ferroelectricity in organic-metal halide perovskite thin films.

scholarly journals Interaction of light with lead halide perovskites: A review

2019 ◽  
Vol 2 (2) ◽  
pp. 67
Author(s):  
Zhiya Dang ◽  
Duc Anh Dinh
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Light Illumination ◽  
Low Light ◽  
Practical Applications ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
First Time ◽  
Lead Halide ◽  
Sample Environment

Lead halide perovskites are the new rising generation of semiconductor materials due to their unique optical and electrical properties. The investigation of the interaction of halide perovskites and light is a key issue not only for understanding their photophysics but also for practical applications. Hence, tremendous efforts have been devoted to this topic and brunch into two: (i) decomposition of the halide perovskites thin films under light illumination; and (ii) influence of light soaking on their photoluminescence (PL) properties. In this review, we for the first time thoroughly compare the illumination conditions and the sample environment to correlate the PL changes and decomposition of perovskite under light illumination. In the case of vacuum and dry nitrogen, PL of the halide perovskite (MAPbI3–xClx, MAPbBr3–xClx, MAPbI3) thin films decreases due to the defects induced by light illumination, and under high excitations, the thin film even decomposes. In the presence of oxygen or moisture, light induces the PL enhancement of halide perovskite (MAPbI3) thin films at low light illumination, while increasing the excitation, which causes the PL to quench and perovskite thin film to decompose. In the case of mixed halide perovskite ((MA)Pb(BrxI1-x)3) light induces reversible segregation of Br domains and I domains. 

scholarly journals Two-Step Synthesis of Bismuth-Based Hybrid Halide Perovskite Thin-Films

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7827
Author(s):  
Vanira Trifiletti ◽  
Sally Luong ◽  
Giorgio Tseberlidis ◽  
Stefania Riva ◽  
Eugenio S. S. Galindez ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Good Alternative ◽  
Bismuth Iodide ◽  
Earth Abundant ◽  
Low Toxicity ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Scalable Methods ◽  
Lead Halide

Lead halide perovskites have been revolutionary in the last decade in many optoelectronic sectors. Their bismuth-based counterparts have been considered a good alternative thanks to their composition of earth-abundant elements, good chemical stability, and low toxicity. Moreover, their electronic structure is in a quasi-zero-dimensional (0D) configuration, and they have recently been explored for use beyond optoelectronics. A significant limitation in applying thin-film technology is represented by the difficulty of synthesizing compact layers with easily scalable methods. Here, the engineering of a two-step synthesis in an air of methylammonium bismuth iodide compact thin films is reported. The critical steps of the process have been highlighted so that the procedure can be adapted to different substrates and application areas.

scholarly journals Defect tolerant device geometries for lead-halide perovskites

2021 ◽  
Author(s):  
Basita Das ◽  
Zhifa Liu ◽  
Irene Aguilera ◽  
Uwe Rau ◽  
Thomas Kirchartz
Keyword(s):  
Thin Films ◽  
Defect Tolerance ◽  
Solution Processed ◽  
Radiative Lifetimes ◽  
Polycrystalline Thin Films ◽  
Halide Perovskites ◽  
Lead Halide

The term defect tolerance is widely used in literature to describe materials such as lead-halides perovskites, where solution-processed polycrystalline thin films exhibit long non-radiative lifetimes of microseconds or longer. Studies...

Luminescence spectroscopy of lead-halide perovskites: materials properties and application as photovoltaic devices

2017 ◽  
Vol 5 (14) ◽  
pp. 3427-3437 ◽  
Author(s):  
Yoshihiko Kanemitsu
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Solar Cell ◽  
Single Crystals ◽  
Luminescence Spectroscopy ◽  
Photovoltaic Devices ◽  
Materials Properties ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Lead Halide

This review summarizes the optical properties of lead-halide-perovskite thin films, single crystals, and solar-cell devices.

scholarly journals Stable Cesium Formamidinium Lead Halide Perovskites: A Comparison of Photophysics and Phase Purity in Thin Films and Single Crystals

2020 ◽  
Vol 8 (4) ◽  
pp. 1901041 ◽  
Author(s):  
Bart G. H. M. Groeneveld ◽  
Sampson Adjokatse ◽  
Olga Nazarenko ◽  
Hong-Hua Fang ◽  
Graeme R. Blake ◽  
...  
Keyword(s):  
Thin Films ◽  
Single Crystals ◽  
Phase Purity ◽  
Stable Cesium ◽  
Halide Perovskites ◽  
Lead Halide

Amplified spontaneous emission in thin films of quasi-2D BA3MA3Pb5Br16 lead halide perovskites

Nanoscale ◽  
2021 ◽  
Author(s):  
Maria Luisa De Giorgi ◽  
A. Creti ◽  
Maria-Grazia La-Placa ◽  
Pablo P. Boix ◽  
Henk J. Bolink ◽  
...  
Keyword(s):  
Thin Films ◽  
Spontaneous Emission ◽  
Three Dimensional ◽  
Amplified Spontaneous Emission ◽  
Two Dimensional ◽  
New Class ◽  
Improved Stability ◽  
Halide Perovskites ◽  
Lead Halide

Quasi-2D (two-dimensional) hybrid perovskites are emerging as a new class of materials with high photoluminescence yield and improved stability compared to their three-dimensional (3D) counterparts. Nevertheless, despite their outstanding emission...

Rare-earth quantum cutting in metal halide perovskites – a review

2021 ◽  
Author(s):  
Silvia M. Ferro ◽  
Merlinde Wobben ◽  
Bruno Ehrler
Keyword(s):  
Thin Films ◽  
Rare Earth ◽  
Metal Halide ◽  
Quantum Cutting ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Lead Halide

Ytterbium-doped lead halide perovskite (Yb3+:CsPbX3 with x = Cl or Cl/Br) nanocrystals and thin films have shown surprisingly efficient downconversion by quantum cutting with PLQYs up to 193%.

scholarly journals Evidence and implications for exciton dissociation in lead halide perovskites

2019 ◽  
Vol 205 ◽  
pp. 06018
Author(s):  
Vandana Tiwari ◽  
Hong-Guang Duan ◽  
Ajay Jha ◽  
Pabitra K. Nayak ◽  
Michael Thorwart ◽  
...  
Keyword(s):  
Thin Films ◽  
Temporal Resolution ◽  
Electronic Spectroscopy ◽  
Two Dimensional ◽  
Transient Grating ◽  
Exciton Dissociation ◽  
Weakly Coupled ◽  
Halide Perovskites ◽  
Lead Halide

We have employed ultrafast transient-grating and two- dimensional electronic spectroscopy to probe dynamics of photo-excited CH3NH3PbI3 thin films with 16-fs temporal resolution. We distinctly capture the 30-fs decay of excitons, weakly coupled to the phonons.

scholarly journals Interaction of light with lead halide perovskites: A review

2018 ◽  
Vol 1 (4) ◽  
Author(s):  
Zhiya Dang 1 ◽  
Duc Anh Dinh 1
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Light Illumination ◽  
Low Light ◽  
Practical Applications ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
First Time ◽  
Lead Halide ◽  
Sample Environment

Lead halide perovskites are the new rising generation of semiconductor materials due to theirunique optical and electrical properties. The investigation of the interaction of halide perovskites and light is a key issue not only for understanding theirphotophysicsbut also for practical applications. Hence, tremendous efforts have been devoted to this topic andbrunch into two:(i)decompositionof the halide perovskites thin films under light illumination and(ii)influence of light soaking on their photoluminescence (PL) properties. In this review, we for the first time thoroughly compare the illumination conditions and the sample environment to correlate the PL changes and decomposition of perovskite under light illumination. Inthe case of vacuum and dry nitrogen, PL of the halide perovskite ( PbI3–xClx, PbBr3–xClx, MAPbI3) thin films decreases due to the defects induced by light illumination, and under high excitations the thin film even decomposes. In thepresence of oxygen or moisture,light induces the PL enhancement of halide perovskite (MAPbI3) thin films at low light illumination, while increasing the excitationcauses the PL to quench and perovskite thin film to decompose. In the case of mixed halide perovskite (MAPb(BrxI1-x)3) light inducesreversible segregation of Br domains and I domains. 

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