Stabilizing lead halide perovskites with quaternary ammonium cations: the case of tetramethylammonium lead iodide

2019 ◽  
Vol 21 (44) ◽  
pp. 24768-24777 ◽  
Author(s):  
Andrea Ciccioli ◽  
Riccardo Panetta ◽  
Alessio Luongo ◽  
Bruno Brunetti ◽  
Stefano Vecchio Ciprioti ◽  
...  
Keyword(s):  
Quaternary Ammonium ◽  
Lead Iodide ◽  
Quaternary Ammonium Cations ◽  
Halide Perovskites ◽  
Lead Halide

N(CH3)4PbI3 is much more stable than CH3NH3PbI3, both kinetically and thermodynamically, and much less prone to water-induced degradation; the use of quaternary ammonium cations may be effective to produce more stable lead halide perovskites.

scholarly journals Microfluidic Approach for Lead Halide Perovskite Flexible Phototransistors

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1852
Author(s):  
Fatemeh Khorramshahi ◽  
Arash Takshi
Keyword(s):  
Room Temperature ◽  
Lead Iodide ◽  
Current Modulation ◽  
Facile Fabrication ◽  
Halide Perovskites ◽  
P Type ◽  
Methylammonium Lead Iodide ◽  
Source Structure ◽  
Polycrystalline Form ◽  
Lead Halide

Lead halide perovskites possess outstanding optical characteristics that can be employed in the fabrication of phototransistors. However, due to low current modulation at room temperature, sensitivity to the ambient environment, lack of patterning techniques and low carrier mobility of polycrystalline form, investigation in perovskite phototransistors has been limited to rigid substrates such as silicon and glass to improve the film quality. Here, we report on room temperature current modulation in a methylammonium lead iodide perovskite (MAPbI3) flexible transistor made by an extremely cheap and facile fabrication process. The proposed phototransistor has the top-gate configuration with a lateral drain–channel–source structure. The device performed in the linear and saturation regions both in the dark and under white light in different current ranges according to the illumination conditions. The transistor showed p-type transport characteristics and the field effect mobility of the device was calculated to be ~1.7 cm2 V−1 s−1. This study is expected to contribute to the development of MAPbI3 flexible phototransistors.

scholarly journals A 3D Lead Iodide Hybrid Based on a 2D Perovskite Subnetwork

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1570
Author(s):  
Maroua Ben Haj Salah ◽  
Justine Tessier ◽  
Nicolas Mercier ◽  
Magali Allain ◽  
Antonin Leblanc ◽  
...  
Keyword(s):  
Carbon Chain ◽  
Carbon Chain Length ◽  
Reference Compound ◽  
Lead Iodide ◽  
Direct Band Gap ◽  
3D Network ◽  
Intermediate Size ◽  
Direct Band ◽  
Halide Perovskites ◽  
Lead Halide

Lead halide perovskites have emerged as promising materials for various optoelectronic applications. For photovoltaics, the reference compound is the 3D perovskite (MA)PbI3 (MA+ = methylammonium). However, this material suffers from instabilities towards humidity or light. This makes the search of new stable 3D lead halide materials very relevant. A strategy is the use of intermediate size cations instead of MA, which are not suitable to form the 3D ABX3 perovskites or 2D perovskites. Here, we report on a novel 3D metal halide hybrid material based on the intermediate size cation hydroxypropylammonium (HPA+), (HPA)6(MA)Pb5I17. We will see that extending the carbon chain length from two CH2 units (in the hydroxylethylammonium cation, HEA+) to three (HPA+) precludes the formation of a perovskite network as found in the lead and iodide deficient perovskite (HEA,MA)1+xPbxI3−x. In (HPA)6(MA)Pb5I17 the 3D lead halide network results from a 2D perovskite subnetworks linked by a PbI6 octahedra sharing its faces. DFT calculations confirm the direct band gap and reveal the peculiar band structure of this 3D network. On one hand the valence band has a 1D nature involving the p orbitals of the halide. On the other, the conduction band possesses a clear 2D character involving hybridization between the p orbitals of the metal and the halide.

Photoluminescence, optical gain, and lasing threshold in CH3NH3PbI3 methylammonium lead-halide perovskites obtained by ab initio calculations

2017 ◽  
Vol 5 (48) ◽  
pp. 12758-12768 ◽  
Author(s):  
A. Filippetti ◽  
C. Caddeo ◽  
P. Delugas ◽  
A. Mattoni
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Recombination Rate ◽  
Optical Gain ◽  
Lasing Threshold ◽  
Lead Iodide ◽  
Charge Densities ◽  
Halide Perovskites ◽  
Lead Halide

Net recombination rate and optical gain at varying injected charge densities for lead-iodide perovskites obtained by ab initio calculations.

THERMAL TRANSPORT BEHAVIORS IN LEAD HALIDE PEROVSKITES

2018 ◽  
Author(s):  
Wee-Liat Ong ◽  
Giselle Elbaz ◽  
Evan A. Doud ◽  
Philip Kim ◽  
Daniel Paley ◽  
...  
Keyword(s):  
Thermal Transport ◽  
Halide Perovskites ◽  
Lead Halide

Revealing the Impact of Cesium/Rubidium Incorporation on the Photophysics of Multiple-Cation Lead Halide Perovskites

2019 ◽  
Author(s):  
Yajun Gao ◽  
Kai wang ◽  
mingcong wang ◽  
Jafar Khan ◽  
Ahmed Balawi ◽  
...  
Keyword(s):  
Halide Perovskites ◽  
The Impact ◽  
Lead Halide

Shedding Light on Optoelectronic Structure Rationalization and Photophysical Pathways in Lead Halide Perovskites - a Single Crystal Story

2018 ◽  
Author(s):  
Masoumeh Keshavarz ◽  
Steffen Wiedmann ◽  
Robert Küchler ◽  
Haifeng Yuan ◽  
Elke Debroye ◽  
...  
Keyword(s):  
Single Crystal ◽  
Halide Perovskites ◽  
Lead Halide

Extending the Compositional Space of Mixed Lead Halide Perovskites by Cs, Rb, K, and Na Doping

2018 ◽  
Vol 122 (25) ◽  
pp. 13548-13557 ◽  
Author(s):  
T. Jesper Jacobsson ◽  
Sebastian Svanström ◽  
Virgil Andrei ◽  
Jasmine P. H. Rivett ◽  
Nikolay Kornienko ◽  
...  
Keyword(s):  
Na Doping ◽  
Halide Perovskites ◽  
Compositional Space ◽  
Lead Halide

scholarly journals Optical Gain of Lead Halide Perovskites Measured via the Variable Stripe Length Method: What We Can Learn and How to Avoid Pitfalls

2021 ◽  
pp. 2001773
Author(s):  
Ada Lili Alvarado‐Leaños ◽  
Daniele Cortecchia ◽  
Giulia Folpini ◽  
Ajay Ram Srimath Kandada ◽  
Annamaria Petrozza
Keyword(s):  
Optical Gain ◽  
Halide Perovskites ◽  
Lead Halide ◽  
Stripe Length
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