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 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 Comment on “Probing the Origins of Photodegradation in OrganicInorganic Metal Halide Perovskites with Time-Resolved Mass Spectrometry”, Sustainable Energy & Fuels, 2018

2018 ◽  
Author(s):  
Emilio Jose Juarez-Perez
Keyword(s):  
Mass Spectrometry ◽  
Sustainable Energy ◽  
Metal Halide ◽  
Lead Iodide ◽  
Evolved Gas ◽  
Time Resolved ◽  
Halide Perovskites ◽  
Methylammonium Lead Iodide

It is comment for an article in Sustainable Energy & Fuels reporting time-resolved mass spectrometry (MS) of evolved gas species during photo-induced degradation of methylammonium lead iodide perovskite (MAPbI3 ).

Comment on “Probing the Origins of Photodegradation in Organic- Inorganic Metal Halide Perovskites with Time-Resolved Mass Spectrometry”, Sustainable Energy & Fuels, 2018.

2019 ◽  
Author(s):  
Emilio Jose Juarez-Perez
Keyword(s):  
Mass Spectrometry ◽  
Sustainable Energy ◽  
Metal Halide ◽  
Original Version ◽  
Lead Iodide ◽  
Evolved Gas ◽  
Time Resolved ◽  
Halide Perovskites ◽  
Methylammonium Lead Iodide

<div>This is a comment on an article in Sustainable Energy & Fuels reporting time-resolved mass spectrometry (MS) of evolved gas species during photo-induced degradation of methylammonium lead iodide perovskite (MAPbI3 ).</div><div><br></div><div>Note:<br></div><div><br></div><div>The authors of the commented article released a response to these observations on February 1, 2019. This document has been updated including new comments to their response on March 13, 2019, see page 4. For the original version of this comment, please see version 1.<br><br></div>

scholarly journals Comment on “Probing the Origins of Photodegradation in Organic- Inorganic Metal Halide Perovskites with Time-Resolved Mass Spectrometry”, Sustainable Energy & Fuels, 2018.

2019 ◽  
Author(s):  
Emilio Jose Juarez-Perez
Keyword(s):  
Mass Spectrometry ◽  
Sustainable Energy ◽  
Metal Halide ◽  
Original Version ◽  
Lead Iodide ◽  
Evolved Gas ◽  
Time Resolved ◽  
Halide Perovskites ◽  
Methylammonium Lead Iodide

<div>This is a comment on an article in Sustainable Energy & Fuels reporting time-resolved mass spectrometry (MS) of evolved gas species during photo-induced degradation of methylammonium lead iodide perovskite (MAPbI3 ).</div><div><br></div><div>Note:<br></div><div><br></div><div>The authors of the commented article released a response to these observations on February 1, 2019. This document has been updated including new comments to their response on March 13, 2019, see page 4. For the original version of this comment, please see version 1.<br><br></div>

scholarly journals The importance of relativistic effects on two-photon absorption spectra in metal halide perovskites

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Zimu Wei ◽  
Dengyang Guo ◽  
Jos Thieme ◽  
Claudine Katan ◽  
Valentina M. Caselli ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Absorption Spectra ◽  
Metal Halide ◽  
Photon Absorption ◽  
Lead Iodide ◽  
Upward Trend ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Halide Perovskites ◽  
Methylammonium Lead Iodide

AbstractDespite intense research into the optoelectronic properties of metal halide perovskites (MHPs), sub-bandgap absorption in MHPs remains largely unexplored. Here we recorded two-photon absorption spectra of MHPs using the time-resolved microwave conductivity technique. A two-step upward trend is observed in the two-photon absorption spectrum for methylammonium lead iodide, and some analogues, which implies that the commonly used scaling law is not applicable to MHPs. This aspect is further confirmed by temperature-dependent conductivity measurements. Using an empirical multiband tight binding model, spectra for methylammonium lead iodide were calculated by integration over the entire Brillouin zone, showing compelling similarity with experimental results. We conclude that the second upward trend in the two-photon absorption spectrum originates from additional optical transitions to the heavy and light electron bands formed by the strong spin-orbit coupling. Hence, valuable insight can be obtained in the opto-electronic properties of MHPs by sub-bandgap spectroscopy, complemented by modelling.

Probing the origins of photodegradation in organic–inorganic metal halide perovskites with time-resolved mass spectrometry

2018 ◽  
Vol 2 (11) ◽  
pp. 2460-2467 ◽  
Author(s):  
Zhaoning Song ◽  
Changlei Wang ◽  
Adam B. Phillips ◽  
Corey R. Grice ◽  
Dewei Zhao ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Metal Halide ◽  
Time Resolved ◽  
Hot Carrier ◽  
Halide Perovskites

Our mass spectrometry measurements indicate that the hot-carrier-induced deprotonation of MA+cations is the fundamental origin of photodegradation.

Interplay of structural and compositional effects on carrier recombination in mixed-halide perovskites

RSC Advances ◽  
2016 ◽  
Vol 6 (90) ◽  
pp. 86947-86954 ◽  
Author(s):  
Eric M. Talbert ◽  
Holly F. Zarick ◽  
Noah J. Orfield ◽  
Wei Li ◽  
William R. Erwin ◽  
...  
Keyword(s):  
Steady State ◽  
Charge Transport ◽  
Grain Structure ◽  
Lead Iodide ◽  
Time Resolved ◽  
Carrier Recombination ◽  
Halide Perovskites ◽  
Planar Films ◽  
Methylammonium Lead Iodide ◽  
Time Resolved Photoluminescence

We investigate the effect of grain structure and bromide content on charge transport in methylammonium lead iodide/bromide perovskites by probing the steady-state and time-resolved photoluminescence of planar films with distinct morphologies.

Time-Resolved Changes in Dielectric Constant of Metal Halide Perovskites under Illumination

2020 ◽  
Vol 142 (47) ◽  
pp. 19799-19803
Author(s):  
Min Ji Hong ◽  
Liangdong Zhu ◽  
Cheng Chen ◽  
Longteng Tang ◽  
Yen-Hung Lin ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Metal Halide ◽  
Time Resolved ◽  
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.

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