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Actively variable-spectrum optoelectronics with black phosphorus

机译：具有黑磷的主动可变频谱光电子

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Room-temperature optoelectronic devices that operate at short-wavelength and mid-wavelength infrared ranges (one to eight micrometres) can be used for numerous applications(1-5). To achieve the range of operating wavelengths needed for a given application, a combination of materials with different bandgaps (for example, superlattices or heterostructures)(6,7) or variations in the composition of semiconductor alloys during growth(8,9) are used. However, these materials are complex to fabricate, and the operating range is fixed after fabrication. Although wide-range, active and reversible tunability of the operating wavelengths in optoelectronic devices after fabrication is a highly desirable feature, no such platform has been yet developed. Here we demonstrate high-performance room-temperature infrared optoelectronics with actively variable spectra by presenting black phosphorus as an ideal candidate. Enabled by the highly strain-sensitive nature of its bandgap, which varies from 0.22 to 0.53 electronvolts, we show a continuous and reversible tuning of the operating wavelengths in light-emitting diodes and photodetectors composed of black phosphorus. Furthermore, we leverage this platform to demonstrate multiplexed nondispersive infrared gas sensing, whereby multiple gases (for example, carbon dioxide, methane and water vapour) are detected using a single light source. With its active spectral tunability while also retaining high performance, our work bridges a technological gap, presenting a potential way of meeting different requirements for emission and detection spectra in optoelectronic applications.High-performance optoelectronic devices that operate in the infrared regime at room temperature exhibit wide-range, active and reversible tunability of the operating wavelengths with black phosphorus.
机译：在短波长和中波长红外线范围内操作的室温光电器件（一至8微米）可用于许多应用（1-5）。为了实现给定应用所需的操作波长范围，使用具有不同带隙（例如，超晶格或异质结构）（6,7）或在生长（8,9）期间半导体合金组成的变化的材料的组合。然而，这些材料是复杂的制造，并且在制造后固定操作范围。虽然在制造后光电器件中的经营波长的广泛，主动和可逆的可调性是一个非常理想的特征，但是已经开发了这种平台。在这里，我们通过将黑磷作为理想的候选者展示了高性能的室温红外光电子，具有主动可变光谱。通过其带隙的高度应变敏感性使其变化从0.22至0.53的电子，我们在发光二极管和黑色磷组成的光电探测器中显示了操作波长的连续和可逆调谐。此外，我们利用该平台来证明多路复用的非分散红外气体感测，由此使用单个光源检测多个气体（例如，二氧化碳，甲烷和水蒸气）。凭借其活跃的光谱可调性，同时还保留了高性能，我们的工作桥接了一种技术差距，展示了对光电应用中的发射和检测光谱的不同要求的潜在方法。高性能光电器件，在室温下在红外方案中运行黑色磷的经营波长的宽范围，主动和可逆可调性。

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  • 来源
    《Nature》 |2021年第7871期|232-237|共6页
  • 作者

    Kim Hyungjin; Uddin Shiekh Zia; Lien Der-Hsien; Yeh Matthew; Azar Nima Sefidmooye; Balendhran Sivacarendran; Kim Taehun; Gupta Niharika; Rho Yoonsoo; Grigoropoulos Costas P.; Crozier Kenneth B.; Javey Ali;

  • 作者单位

    Univ Calif Berkeley Dept Elect Engn & Comp Sci Berkeley CA 94720 USA|Lawrence Berkeley Natl Lab Div Sci Mat Berkeley CA 94720 USA;

    Univ Calif Berkeley Dept Elect Engn & Comp Sci Berkeley CA 94720 USA|Lawrence Berkeley Natl Lab Div Sci Mat Berkeley CA 94720 USA;

    Univ Calif Berkeley Dept Elect Engn & Comp Sci Berkeley CA 94720 USA|Lawrence Berkeley Natl Lab Div Sci Mat Berkeley CA 94720 USA;

    Univ Calif Berkeley Dept Elect Engn & Comp Sci Berkeley CA 94720 USA|Lawrence Berkeley Natl Lab Div Sci Mat Berkeley CA 94720 USA;

    Univ Melbourne Dept Elect & Elect Engn Melbourne Vic Australia;

    Univ Melbourne Sch Phys Melbourne Vic Australia;

    Univ Calif Berkeley Dept Elect Engn & Comp Sci Berkeley CA 94720 USA|Lawrence Berkeley Natl Lab Div Sci Mat Berkeley CA 94720 USA;

    Univ Calif Berkeley Dept Elect Engn & Comp Sci Berkeley CA 94720 USA|Lawrence Berkeley Natl Lab Div Sci Mat Berkeley CA 94720 USA;

    Univ Calif Berkeley Dept Mech Engn Berkeley CA 94720 USA;

    Univ Calif Berkeley Dept Mech Engn Berkeley CA 94720 USA;

    Univ Melbourne Dept Elect & Elect Engn Melbourne Vic Australia|Univ Melbourne Sch Phys Melbourne Vic Australia|Univ Melbourne Ctr Excellence Transformat Metaopt Syst TMOS Australian Res Council ARC Melbourne Vic Australia;

    Univ Calif Berkeley Dept Elect Engn & Comp Sci Berkeley CA 94720 USA|Lawrence Berkeley Natl Lab Div Sci Mat Berkeley CA 94720 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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