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Sökning: onr:"swepub:oai:DiVA.org:uu-433038" > Gold-Hyperdoped Ger...

Gold-Hyperdoped Germanium with Room-Temperature Sub-Band-Gap Optoelectronic Response

Gandhi, Hemi H. (författare)
Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
Pastor, David (författare)
Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.;Univ Complutense Madrid, Fac Ciencias Fis, Dept Estruct Mat Fis Term & Elect, Madrid 28040, Spain.
Tran, Tuan T. (författare)
Uppsala universitet,Tillämpad kärnfysik,Australian Natl Univ, Res Sch Phys & Engn, Dept Elect Mat Engn, Canberra, ACT 0200, Australia.
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Kalchmair, S. (författare)
Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
Smilie, L. A. (författare)
Australian Natl Univ, Res Sch Phys & Engn, Dept Elect Mat Engn, Canberra, ACT 0200, Australia.
Mailoa, Jonathan P. (författare)
Robert Bosch LLC, Cambridge, MA 02138 USA.
Milazzo, Ruggero (författare)
Univ Padua, Dipartimento Fis & Astron, Via Marzolo 8, I-35131 Padua, Italy.;CNR IMM, Via Marzolo 8, I-35131 Padua, Italy.
Napolitani, Enrico (författare)
Univ Padua, Dipartimento Fis & Astron, Via Marzolo 8, I-35131 Padua, Italy.;CNR IMM, Via Marzolo 8, I-35131 Padua, Italy.
Loncar, Marco (författare)
Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
Williams, James S. (författare)
Australian Natl Univ, Res Sch Phys & Engn, Dept Elect Mat Engn, Canberra, ACT 0200, Australia.
Aziz, Michael J. (författare)
Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
Mazur, Eric (författare)
Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
visa färre...
Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.;Univ Complutense Madrid, Fac Ciencias Fis, Dept Estruct Mat Fis Term & Elect, Madrid 28040, Spain. (creator_code:org_t)
AMER PHYSICAL SOC, 2020
2020
Engelska.
Ingår i: Physical Review Applied. - : AMER PHYSICAL SOC. - 2331-7019. ; 14:6
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • Short-wavelength-infrared (SWIR; 1.4-3.0 mu m) photodetection is important for various applications. Inducing a low-cost silicon-compatible material, such as germanium, to detect SWIR light would be advantageous for SWIR applications compared with using conventional (III-V or II-VI) SWIR materials. Here, we present a scalable nonequilibrium method for hyperdoping germanium with gold for dopant-mediated SWIR photodetection. Using ion implantation followed by nanosecond pulsed laser melting, we obtain a single-crystal material with a peak gold concentration of 3 x 10(19) cm(-3) (10(3) times the solubility limit). This hyperdoped germanium has fundamentally different optoelectronic properties from those of intrinsic and conventionally doped germanium. This material exhibits sub-band-gap absorption of light up to wavelengths of at least 3 mu m, with a sub-band-gap optical absorption coefficient comparable to that of commercial SWIR photodetection materials. We show that germanium hyperdoped with gold exhibits sub-band-gap SWIR photodetection at room temperature, in contrast with previous doped-germanium photodetector studies, which only show a low-temperature response. This material is a potential pathway to low-cost room-temperature silicon-compatible SWIR photodetection.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

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