{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:08:59Z","timestamp":1760234939831,"version":"build-2065373602"},"reference-count":39,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2021,6,30]],"date-time":"2021-06-30T00:00:00Z","timestamp":1625011200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004504","name":"Lietuvos Mokslo Taryba","doi-asserted-by":"publisher","award":["S-LU-20-7"],"award-info":[{"award-number":["S-LU-20-7"]}],"id":[{"id":"10.13039\/501100004504","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The article presents the results of experimental studies of the dc and high-frequency electrical characteristics of planar microwave diodes that are fabricated on the base of the n-AlxGa1-xAs layer (x = 0, 0.15 or 0.3), epitaxially grown on a semi-insulating GaAs substrate. The diodes can serve as reliable and inexpensive sensors of microwave radiation in the millimeter wavelength range; they sense electromagnetic radiation directly, without any external bias voltage at room temperature. The investigation revealed a strong dependence of the detection properties of the microwave diodes on AlAs mole fraction x: in the Ka microwave frequency range, the median value of voltage responsivity is several volts per watt in the case of GaAs-based diodes (x = 0), and it substantially increases, reaching hundreds of volts per watt at higher x values. Also, a model enabling us to forecast the responsivity of the sensor in other frequency ranges is proposed.<\/jats:p>","DOI":"10.3390\/s21134487","type":"journal-article","created":{"date-parts":[[2021,7,1]],"date-time":"2021-07-01T02:44:39Z","timestamp":1625107479000},"page":"4487","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Sensitive Planar Microwave Diode on the Base of Ternary AlxGa1-xAs Semiconductor Compound"],"prefix":"10.3390","volume":"21","author":[{"given":"Maksimas","family":"Anbinderis","sequence":"first","affiliation":[{"name":"Center for Physical Sciences and Technology, Savanori\u0173 Ave. 231, 02300 Vilnius, Lithuania"},{"name":"Department of Physics, Vilnius Gediminas Technical University, Saul\u0117tekio Ave. 11, 10223 Vilnius, Lithuania"}]},{"given":"Steponas","family":"A\u0161montas","sequence":"additional","affiliation":[{"name":"Center for Physical Sciences and Technology, Savanori\u0173 Ave. 231, 02300 Vilnius, Lithuania"}]},{"given":"Aurimas","family":"\u010cer\u0161kus","sequence":"additional","affiliation":[{"name":"Center for Physical Sciences and Technology, Savanori\u0173 Ave. 231, 02300 Vilnius, Lithuania"},{"name":"Department of Physics, Vilnius Gediminas Technical University, Saul\u0117tekio Ave. 11, 10223 Vilnius, Lithuania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0538-4854","authenticated-orcid":false,"given":"Jonas","family":"Gradauskas","sequence":"additional","affiliation":[{"name":"Center for Physical Sciences and Technology, Savanori\u0173 Ave. 231, 02300 Vilnius, Lithuania"},{"name":"Department of Physics, Vilnius Gediminas Technical University, Saul\u0117tekio Ave. 11, 10223 Vilnius, Lithuania"}]},{"given":"And\u017eej","family":"Lu\u010dun","sequence":"additional","affiliation":[{"name":"Center for Physical Sciences and Technology, Savanori\u0173 Ave. 231, 02300 Vilnius, Lithuania"}]},{"given":"Aldis","family":"\u0160il\u0117nas","sequence":"additional","affiliation":[{"name":"Center for Physical Sciences and Technology, Savanori\u0173 Ave. 231, 02300 Vilnius, Lithuania"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5725-1378","authenticated-orcid":false,"given":"Algirdas","family":"Su\u017eied\u0117lis","sequence":"additional","affiliation":[{"name":"Center for Physical Sciences and Technology, Savanori\u0173 Ave. 231, 02300 Vilnius, Lithuania"}]}],"member":"1968","published-online":{"date-parts":[[2021,6,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1664","DOI":"10.1109\/22.247910","article-title":"Focal plane imaging systems for millimetre wavelengths","volume":"41","author":"Goldsmith","year":"1993","journal-title":"IEEE Trans. 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