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Express"],"published-print":{"date-parts":[[2020,1,20]]},"abstract":"<jats:p>We develop the device models for the far-infrared interband photodetectors (IPs) with the graphene-layer (GL) sensitive elements and the black Phosphorus (b-P) or black-Arsenic (b-As) barrier layers (BLs). These far-infrared GL\/BL-based IPs (GBIPs) can operate at the photon energies <jats:inline-formula>\n      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\">\n\t<mml:mi class=\"MJX-variant\">\u210f<\/mml:mi>\n\t<mml:mi mathvariant=\"normal\">\u03a9<\/mml:mi>\n      <\/mml:math>\n    <\/jats:inline-formula> smaller than the energy gap, \u0394<jats:sub>\n      <jats:italic>G<\/jats:italic>\n    <\/jats:sub>, of the b-P or b-As or their compounds, namely, at <jats:inline-formula>\n      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\">\n\t<mml:mi class=\"MJX-variant\">\u210f<\/mml:mi>\n\t<mml:mi mathvariant=\"normal\">\u03a9<\/mml:mi>\n\t<mml:mo>\u2272<\/mml:mo>\n\t<mml:mn>2<\/mml:mn>\n\t<mml:msub>\n\t  <mml:mi mathvariant=\"normal\">\u0394<\/mml:mi>\n\t  <mml:mi>G<\/mml:mi>\n\t<\/mml:msub>\n\t<mml:mrow class=\"MJX-TeXAtom-ORD\">\n\t  <mml:mo>\/<\/mml:mo>\n\t<\/mml:mrow>\n\t<mml:mn>3<\/mml:mn>\n      <\/mml:math>\n    <\/jats:inline-formula> corresponding to the wavelength range <jats:inline-formula>\n      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\">\n\t<mml:mi>\u03bb<\/mml:mi>\n\t<mml:mo>\u2273<\/mml:mo>\n\t<mml:mo stretchy=\"false\">(<\/mml:mo>\n\t<mml:mn>6<\/mml:mn>\n\t<mml:mo>\u2212<\/mml:mo>\n\t<mml:mn>12<\/mml:mn>\n\t<mml:mo stretchy=\"false\">)<\/mml:mo>\n\t<mml:mtext>\u00a0<\/mml:mtext>\n\t<mml:mi>\u03bc<\/mml:mi>\n      <\/mml:math>\n    <\/jats:inline-formula>m. The GBIP operation spectrum can be shifted to the terahertz range by increasing the bias voltage. The BLs made of the compounds b-As<jats:sub>\n      <jats:italic>x<\/jats:italic>\n    <\/jats:sub>B<jats:sub>1\u2212<jats:italic>x<\/jats:italic><\/jats:sub> with different <jats:italic>x<\/jats:italic>, enable the GBIPs with desirable spectral characteristics. The GL doping level substantially affects the GBIP characteristics and is important for their optimization. A remarkable feature of the GBIPs under consideration is a substantial (over an order of magnitude) lowering of the dark current due to a partial suppression of the dark-current gain accompanied by a fairly high photoconductive gain. Due to a large absorption coefficient and photoconductive gain, the GBIPs can exhibit large values of the internal responsivity and dark-current-limited detectivity exceeding those of the quantum-well and quantum-dot IPs using the intersubband transitions. The GBIPs with the b-P and b-As BLs can operate at longer radiation wavelengths than the infrared GL-based IPs comprising the BLs made of other van der Waals materials and can also compete with all kinds of the far-infrared photodetectors.<\/jats:p>","DOI":"10.1364\/oe.376299","type":"journal-article","created":{"date-parts":[[2019,12,4]],"date-time":"2019-12-04T21:30:53Z","timestamp":1575495053000},"page":"2480","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":34,"title":["Far-infrared photodetectors based on graphene\/black-AsP heterostructures"],"prefix":"10.1364","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5000-3109","authenticated-orcid":true,"given":"Victor","family":"Ryzhii","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maxim","family":"Ryzhii","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vladimir","family":"Mitin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1944-4472","authenticated-orcid":true,"given":"Michael S.","family":"Shur","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taiichi","family":"Otsuji","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2020,1,17]]},"reference":[{"key":"oe-28-2-2480-R3","doi-asserted-by":"publisher","first-page":"5054","DOI":"10.3390\/s130405054","volume":"13","author":"Downs","year":"2013","journal-title":"Sensors"},{"key":"oe-28-2-2480-R4","doi-asserted-by":"publisher","first-page":"97","DOI":"10.1038\/nphoton.2007.3","volume":"1","author":"Tonouchi","year":"2007","journal-title":"Nat. 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