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.

Reducing the leakage current for a CsPbBr3 detector via asymmetric area electrodes and heterostructures

2021 ◽  
Author(s):  
YingFeng Ruan ◽  
Pengju Guo ◽  
Zhiping Zheng ◽  
Qiuyun Fu ◽  
Rongda Zhou ◽  
...  
Keyword(s):  
Leakage Current ◽  
Room Temperature ◽  
Next Generation ◽  
Typical Representative ◽  
X Ray ◽  
Inorganic Lead ◽  
Halide Perovskites ◽  
Lead Halide

As a typical representative of all-inorganic lead halide perovskites, cesium lead bromine (CsPbBr3) has been regarded as the workhorse of next-generation room temperature X-ray detectors in recent years.

scholarly journals Direct Observation of Dynamic Symmetry Breaking above Room Temperature in Methylammonium Lead Iodide Perovskite

2016 ◽  
Vol 1 (4) ◽  
pp. 880-887 ◽  
Author(s):  
Alexander N. Beecher ◽  
Octavi E. Semonin ◽  
Jonathan M. Skelton ◽  
Jarvist M. Frost ◽  
Maxwell W. Terban ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Direct Observation ◽  
Room Temperature ◽  
Dynamic Symmetry ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide

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.

Formation and Encapsulation of All-Inorganic Lead Halide Perovskites at Room Temperature in Metal–Organic Frameworks

2019 ◽  
Vol 10 (9) ◽  
pp. 2270-2277 ◽  
Author(s):  
Ji-Hyun Cha ◽  
Kyungkyou Noh ◽  
Wenping Yin ◽  
Yongju Lee ◽  
Yongmin Park ◽  
...  
Keyword(s):  
Room Temperature ◽  
Metal Organic Frameworks ◽  
Inorganic Lead ◽  
Metal Organic ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Rapid synthesis of hybrid methylammonium lead iodide perovskite quantum dots and rich MnI2 substitution favouring Pb-free warm white LED applications

2019 ◽  
Vol 1 (8) ◽  
pp. 2999-3008 ◽  
Author(s):  
Rajan Kumar Singh ◽  
Sudipta Som ◽  
Somrita Dutta ◽  
Neha Jain ◽  
Mei-Tsun Kuo ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Environmental Pollution ◽  
Room Temperature ◽  
White Led ◽  
Lead Iodide ◽  
Rapid Synthesis ◽  
Temperature Synthesis ◽  
Room Temperature Synthesis ◽  
Perovskite Quantum Dots ◽  
Methylammonium Lead Iodide

We present a facile room temperature synthesis of CH3NH3Pb1−xMnxI3 perovskite quantum dots (PQDs) substituting manganese (Mn2+) at the lead (Pb2+) sites to minimize environmental pollution and make it commercially feasible.

scholarly journals Direct calorimetric verification of thermodynamic instability of lead halide hybrid perovskites

2016 ◽  
Vol 113 (28) ◽  
pp. 7717-7721 ◽  
Author(s):  
G. P. Nagabhushana ◽  
Radha Shivaramaiah ◽  
Alexandra Navrotsky
Keyword(s):  
Formation Enthalpy ◽  
Ambient Air ◽  
Heat Of Formation ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide ◽  
Conversion Efficiencies ◽  
Induced Defects ◽  
Thermodynamic Instability ◽  
Lead Halide

Hybrid perovskites, especially methylammonium lead iodide (MAPbI3), exhibit excellent solar power conversion efficiencies. However, their application is plagued by poor chemical and structural stability. Using direct calorimetric measurement of heats of formation, MAPbI3 is shown to be thermodynamically unstable with respect to decomposition to lead iodide and methylammonium iodide, even in the absence of ambient air or light or heat-induced defects, thus limiting its long-term use in devices. The formation enthalpy from binary halide components becomes less favorable in the order MAPbCl3, MAPbBr3, MAPbI3, with only the chloride having a negative heat of formation. Optimizing the geometric match of constituents as measured by the Goldschmidt tolerance factor provides a potentially quantifiable thermodynamic guide for seeking chemical substitutions to enhance stability.

Room-temperature electroluminescence from two-dimensional lead halide perovskites

2016 ◽  
Vol 109 (15) ◽  
pp. 151101 ◽  
Author(s):  
Renzhi Li ◽  
Chang Yi ◽  
Rui Ge ◽  
Wei Zou ◽  
Lu Cheng ◽  
...  
Keyword(s):  
Room Temperature ◽  
Two Dimensional ◽  
Halide Perovskites ◽  
Lead Halide

scholarly journals Response to “Comment on ‘Probing the Origins of Photodegradation in Organic-Inorganic Metal Halide Perovskites with Time-Resolved Mass Spectrometry’”

2019 ◽  
Author(s):  
Zhaoning Song ◽  
Michael J. Heben ◽  
Yanfa Yan
Keyword(s):  
Mass Spectrometry ◽  
Recent Article ◽  
Common Ground ◽  
Metal Halide ◽  
Lead Iodide ◽  
Time Resolved ◽  
Halide Perovskites ◽  
The Difference ◽  
Methylammonium Lead Iodide

In a recent article, we investigated the photodegradation of various organic-inorganic metal halide perovskites using time-resolved mass spectrometry (MS). Dr. Juarez-Perez raises some concerns in his comment to our work, with an emphasis on distinguishing the difference in the results observed for methylammonium lead iodide perovskite (MAPbI3) in our study and his work. After reviewing Dr. Juarez-Perez‘s comment and exchanging ideas with him, we found that both articles complement each other well. To examine common ground and differences in the results and interpretations, we offer our response here to address some important issues he raised.

scholarly journals Room temperature long-range coherent exciton polariton condensate flow in lead halide perovskites

2018 ◽  
Vol 4 (10) ◽  
pp. eaau0244 ◽  
Author(s):  
Rui Su ◽  
Jun Wang ◽  
Jiaxin Zhao ◽  
Jun Xing ◽  
Weijie Zhao ◽  
...  
Keyword(s):  
Long Range ◽  
High Speed ◽  
Room Temperature ◽  
Optoelectronic Devices ◽  
Lead Bromide ◽  
All Optical ◽  
Halide Perovskites ◽  
Integrated Logic ◽  
Lead Halide ◽  
Speed Propagation

Novel technological applications significantly favor alternatives to electrons toward constructing low power–consuming, high-speed all-optical integrated optoelectronic devices. Polariton condensates, exhibiting high-speed coherent propagation and spin-based behavior, attract considerable interest for implementing the basic elements of integrated optoelectronic devices: switching, transport, and logic. However, the implementation of this coherent polariton condensate flow is typically limited to cryogenic temperatures, constrained by small exciton binding energy in most semiconductor microcavities. Here, we demonstrate the capability of long-range nonresonantly excited polariton condensate flow at room temperature in a one-dimensional all-inorganic cesium lead bromide (CsPbBr3) perovskite microwire microcavity. The polariton condensate exhibits high-speed propagation over macroscopic distances of 60 μm while still preserving the long-range off-diagonal order. Our findings pave the way for using coherent polariton condensate flow for all-optical integrated logic circuits and polaritonic devices operating at room temperature.

scholarly journals Defect induced room temperature ferromagnetism in methylammonium lead iodide perovskite

2020 ◽  
Vol 384 (14) ◽  
pp. 126278 ◽  
Author(s):  
Sayantan Sil ◽  
Homnath Luitel ◽  
Joydeep Dhar ◽  
Mahuya Chakrabarti ◽  
Partha Pratim Ray ◽  
...  
Keyword(s):  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide
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