Ցոյց տուր կառուցուածքը

Ամսագրի կամ հրապարակման վերնագիր:

Բյուրականի աստղադիտարանի հաղորդումներ: Երևանի աստղադիտարանի բյուլետեն = Сообщения Бюраканской обсерватории. Бюллетень ереванской Астрономической обсерватории = Contributions from the Burakan observatory. Bulletin of the Erevan astronomical observatory

Հրապարակման ամսաթիւ:

2023

Հատոր:

70

Համար:

2

ISSN:

2579-2276

Վերնագիր:

Mid-Infrared Detectors for Space Electronics Based on InAs-core/InP-Shell Nanowires

Ստեղծողը:

Vinnichenko, M. Ya. ; Ustimenko, R. V. ; Karaulov, D. A. ; Firsov, D. A. ; Fedorov, V. V. ; Mozharov, A. M. ; Kirilenko, D. A. ; Mukhin, I. S. ; Sarkisyan, H. A. ; Hayrapetyan, D. B. ; Kazaryan, E. M.

Խորագիր:

Astrometry ; Space Sciences ; Archaeoastronomy and Astronomy in Culture

Չվերահսկուող բանալի բառեր:

nanowires ; passivation ; detectors ; radiation sources ; photoluminescence

Ծածկոյթ:

344-347

Ամփոփում:

The Mid-Infrared (MIR) spectral range is most important for free-space communications and astronomy. It contains radiation emitted by astrophysical objects during evolution of the planets, stars, galaxies and in particular by prebiosignature molecules on exoplanets. Nanowires (NWs) are expected to improve various optoelectronic devices, including IR photodetector technology. The bandgap of the catalystless InAs NWs can be tuned by introducing mechanical strain due to lattice mismatches in the core/shell NWs structures. Passivation with wider bandgap InP shell provide highly tunable functionality for future electronic devices. Temperature dependence of photoluminescence (PL) spectra of NWs InAs and InAs-core/InP-shell was acquired using Fourier-spectrometer. The position of the high-energy PL peak between calculated values of Eg for wurtzite and sphalerite structures confirms the formation of NWs into a combined polytype. Low energy PL peak is connected with parasitic bulk islands. Surface passivation successfully eliminates surface states and provides nontrivial temperature dependence of high-energy PL peak due to tensile and compressive strain in InAs core. Thus, detectors based on NWs InAs and InAscore/ InP-shell structures can operate in the MIR range of the spectrum with a wavelength from 2 to 5 μm

Տեսակ:

Electronic journal

Ձեւաչափ:

pdf

Գլխաւոր նշումը:

Communications of the Byurakan Astrophysical Observatory (ComBAO) is a peer-reviewed scientific journal, which publishes research in observational and theoretical astronomy/astrophysics and presents recent advances in these fields. It is being published by the NAS RA V. Ambartsumian Byurakan Astrophysical Observatory (BAO) in English in electronic form. The journal publishes original papers, review papers, brief reports, book reviews, special communications, observational and theoretical results in various fields of astronomy and related sciences, and some editorial notes, including anniversaries and obituaries. Under the heading “Legacy”, the renewed magazine will republish some old articles of high value in English. The heading “Guest articles” will bring to the attention of readers the articles of researchers who are not employees of BAO. ComBAO was founded in 1946 and regularly published in 1946-1990. However, the publication was interrupted because of the economic situation after the disintegration of the Soviet Union in 1991.

Բնօրինակին գտնուելու վայրը:

ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան