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Gold-Hyperdoped Ger...
Gold-Hyperdoped Germanium with Room-Temperature Sub-Band-Gap Optoelectronic Response
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- Gandhi, Hemi H. (author)
- Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
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- Pastor, David (author)
- 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.
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- Tran, Tuan T. (author)
- 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. (author)
- Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
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- Smilie, L. A. (author)
- Australian Natl Univ, Res Sch Phys & Engn, Dept Elect Mat Engn, Canberra, ACT 0200, Australia.
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- Mailoa, Jonathan P. (author)
- Robert Bosch LLC, Cambridge, MA 02138 USA.
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- Milazzo, Ruggero (author)
- Univ Padua, Dipartimento Fis & Astron, Via Marzolo 8, I-35131 Padua, Italy.;CNR IMM, Via Marzolo 8, I-35131 Padua, Italy.
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- Napolitani, Enrico (author)
- Univ Padua, Dipartimento Fis & Astron, Via Marzolo 8, I-35131 Padua, Italy.;CNR IMM, Via Marzolo 8, I-35131 Padua, Italy.
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- Loncar, Marco (author)
- Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
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- Williams, James S. (author)
- Australian Natl Univ, Res Sch Phys & Engn, Dept Elect Mat Engn, Canberra, ACT 0200, Australia.
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- Aziz, Michael J. (author)
- Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
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- Mazur, Eric (author)
- Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
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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
- English.
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In: Physical Review Applied. - : AMER PHYSICAL SOC. - 2331-7019. ; 14:6
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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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.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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- art (subject category)
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- By the author/editor
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Gandhi, Hemi H.
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Pastor, David
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Tran, Tuan T.
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Kalchmair, S.
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Smilie, L. A.
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Mailoa, Jonathan ...
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show more...
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Milazzo, Ruggero
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Napolitani, Enri ...
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Loncar, Marco
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Williams, James ...
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Aziz, Michael J.
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Mazur, Eric
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
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Physical Review ...
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Uppsala University