Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Alexander Z. Chen"'
Autor:
Alexander Z. Chen, Michelle Shiu, Jennifer H. Ma, Matthew R. Alpert, Depei Zhang, Benjamin J. Foley, Detlef-M. Smilgies, Seung-Hun Lee, Joshua J. Choi
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
It is desirable to align the two-dimensional perovskite layers vertical to the electrodes to maximize device performance but the formation mechanism is unclear. Here Chen et al. reveal that the film formation starts at the liquid-air interface and is
Externí odkaz:
https://doaj.org/article/dc6cad8bd05b494a86c0aaad8f5a2e3e
Autor:
Ashutosh Giri, Depei Zhang, Kiumars Aryana, Alexander Z. Chen, Joshua J. Choi, Xiao Hu, Alessandro Mattoni, Patrick E. Hopkins, Seunghun Lee
Publikováno v:
Nano letters
20 (2020): 3331–3337. doi:10.1021/acs.nanolett.0c00214
info:cnr-pdr/source/autori:Giri, Ashutosh; Chen, Alexander Z.; Mattoni, Alessandro; Aryana, Kiumars; Zhang, Depei; Hu, Xiao; Lee, Seung-Hun; Choi, Joshua J.; Hopkins, Patrick E./titolo:Ultralow Thermal Conductivity of Two-Dimensional Metal Halide Perovskites/doi:10.1021%2Facs.nanolett.0c00214/rivista:Nano letters (Print)/anno:2020/pagina_da:3331/pagina_a:3337/intervallo_pagine:3331–3337/volume:20
20 (2020): 3331–3337. doi:10.1021/acs.nanolett.0c00214
info:cnr-pdr/source/autori:Giri, Ashutosh; Chen, Alexander Z.; Mattoni, Alessandro; Aryana, Kiumars; Zhang, Depei; Hu, Xiao; Lee, Seung-Hun; Choi, Joshua J.; Hopkins, Patrick E./titolo:Ultralow Thermal Conductivity of Two-Dimensional Metal Halide Perovskites/doi:10.1021%2Facs.nanolett.0c00214/rivista:Nano letters (Print)/anno:2020/pagina_da:3331/pagina_a:3337/intervallo_pagine:3331–3337/volume:20
We report on the thermal conductivities of two-dimensional metal halide perovskite films measured by time domain thermoreflectance. Depending on the molecular substructure of ammonium cations and owing to the weaker interactions in the layered struct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::71a0389c4513c029a348e694ad095d17
https://doi.org/10.1021/acs.nanolett.0c00214
https://doi.org/10.1021/acs.nanolett.0c00214
Autor:
Katelyn A. Dagnall, Alexander Z. Chen, Kai Xiao, Mool C. Gupta, Xiaoyu Deng, Seunghun Lee, Matthew R. Alpert, Shelby Cuthriell, Zeming Sun, Benjamin Foley, Ying-Zhong Ma, Joshua J. Choi
Publikováno v:
ACS Applied Energy Materials. 3:1298-1304
We report charge recombination rates in lead iodide perovskites with alloys of formamidinium (FA) and methylammonium (MA) cations, FAxMA1–xPbI3, 0 ≤ x ≤ 0.9, prepared through ion exchange with mini...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9dcf8cf10953cb7177ffb8309bc103c3
https://doi.org/10.1021/acsaem.9b02310
https://doi.org/10.1021/acsaem.9b02310
Autor:
Depei Zhang, Seunghun Lee, Gaurav Giri, Alexander Z. Chen, Michelle Shiu, Mustafa Mahmoud, Joshua J. Choi, Benjamin Foley, Xiaoyu Deng
Publikováno v:
Chemistry of Materials. 31:1336-1343
Metal halide perovskites have demonstrated strong potential for optoelectronic applications. Particularly, two-dimensional (2D) perovskites have emerged to be promising materials due to their tunable properties and superior stability compared to thei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f922665ab33aee7ce99f583332a2cb8
https://doi.org/10.1021/acs.chemmater.8b04531
https://doi.org/10.1021/acs.chemmater.8b04531
Autor:
Xiao, Hu, Depei, Zhang, Tianran, Chen, Alexander Z, Chen, Eric N, Holmgren, Qiang, Zhang, Daniel M, Pajerowski, Mina, Yoon, Guangyong, Xu, Joshua J, Choi, Seung-Hun, Lee
Publikováno v:
The Journal of chemical physics. 152(1)
The extended charge carrier lifetime in metal halide perovskites is responsible for their excellent optoelectronic properties. Recent studies indicate that the superb device performance in these materials is intimately related to the organic cation d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::1773e58d4cc40d3eb4a01e2565735add
https://pubmed.ncbi.nlm.nih.gov/31914767
https://pubmed.ncbi.nlm.nih.gov/31914767
Autor:
J. Scott Niezgoda, Alexander Z. Chen, Joshua J. Choi, Shelby Cuthriell, Lucy U. Yoon, Matthew R. Alpert, Benjamin Foley
Publikováno v:
Chemistry of Materials. 30:4515-4526
Charge recombination at surface trap sites is a significant impediment to metal halide perovskite (MHP) thin film-based optoelectronic devices. To passivate the surface charge traps, chemical treatments with molecules that bind to the MHP thin film s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efbbd95ffc2584ef137314c38a7212ff
https://doi.org/10.1021/acs.chemmater.8b00414
https://doi.org/10.1021/acs.chemmater.8b00414
Autor:
Mool C. Gupta, Joshua J. Choi, Narasimha S. Prasad, George C. Wilkes, Alexander Z. Chen, Xiaoyu Deng
Publikováno v:
The Journal of Physical Chemistry Letters. 8:3206-3210
In order to realize high-throughput roll-to-roll manufacturing of flexible perovskite solar cells, low-temperature processing of all device components must be realized. However, the most commonly used electron transporting layer in high-performance p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a14aefcfc11b64210f846ff81a5a47f
https://doi.org/10.1021/acs.jpclett.7b01466
https://doi.org/10.1021/acs.jpclett.7b01466
Publikováno v:
ACS Energy Letters. 2:1043-1049
Halide dealloying in CsPbBrI2 perovskite solar cells proves to be critical in achieving high performance. This dealloying occurs under steady illumination and is a reversible process, suggesting transitions between equilibrium states under dark and i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06e28c38c558683bbd4072940b365f51
https://doi.org/10.1021/acsenergylett.7b00258
https://doi.org/10.1021/acsenergylett.7b00258
Autor:
Wissam A. Saidi, Matthew R. Alpert, Alexander Z. Chen, Paulette Clancy, Justin Girard, Benjamin Foley, J. Scott Niezgoda, Detlef-M. Smilgies, Blaire A. Sorenson, Angela F. Harper, Joshua J. Choi
Publikováno v:
Journal of Materials Chemistry A. 5:113-123
Accelerating the progress toward realizing metal halide perovskite solar cells with improved efficiency, stability and reliability requires a deeper understanding of the thin film formation processes. This paper investigates the impact of rationally
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48bf2fc7c3519db25961ebcac864bc8c
https://doi.org/10.1039/c6ta07671h
https://doi.org/10.1039/c6ta07671h
Autor:
Matthew R. Alpert, Jennifer H. Ma, Benjamin Foley, Alexander Z. Chen, J. Scott Niezgoda, Joshua J. Choi
Publikováno v:
Journal of Materials Chemistry A. 5:7796-7800
Metal halide perovskites have achieved remarkable efficiency in solar cells. However, the origin and impact of preferential crystallographic orientation of thin films are still not well understood. In this work, using in situ grazing-incidence X-ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aac58e66c10a516294bd08f433ca1efb
https://doi.org/10.1039/c7ta02203d
https://doi.org/10.1039/c7ta02203d