Semiconductors

Semiconductors are materials that have a small electronic bandgap. This bandgap prevents current from flowing at absolute zero, but thermally excited charge carriers can begin to flow at higher temperatures. Semiconductors, notably silicon, are at the heart of the modern microelectronics industry, and also have applications in light sources and detectors.

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Latest Research and Reviews

  • Research
    | Open Access

    A significant challenge of infrared (IR) photodetectors is to funnel light into a small nanoscale active area and efficiently convert it into an electrical signal. Here, the authors couple a plasmonic antenna to hyperbolic phonon-polaritons in hexagonal-BN to highly concentrate mid-IR light into a graphene pn-junction.

    • Sebastián Castilla
    • , Ioannis Vangelidis
    • , Varun-Varma Pusapati
    • , Jordan Goldstein
    • , Marta Autore
    • , Tetiana Slipchenko
    • , Khannan Rajendran
    • , Seyoon Kim
    • , Kenji Watanabe
    • , Takashi Taniguchi
    • , Luis Martín-Moreno
    • , Dirk Englund
    • , Klaas-Jan Tielrooij
    • , Rainer Hillenbrand
    • , Elefterios Lidorikis
    •  & Frank H. L. Koppens
  • Research
    | Open Access

    Though literature reports improvements in organic electronic device performance, understanding the correlation between static and dynamic device responses remains a challenge. Here, the authors correlate static and dynamic parameters in organic transistors by using the radiofrequency circuit model.

    • Taiki Sawada
    • , Akifumi Yamamura
    • , Mari Sasaki
    • , Kayo Takahira
    • , Toshihiro Okamoto
    • , Shun Watanabe
    •  & Jun Takeya
  • Research
    | Open Access

    The realisation of film made up of different compositions using colloidal QD inks remains a challenge because of redispersing of underlying films by polar solvents. Here, the authors introduce aromatic ligands to achieve QD inks in weakly-polar solvents that enable fabrication of multi-compositional films.

    • Seungjin Lee
    • , Min-Jae Choi
    • , Geetu Sharma
    • , Margherita Biondi
    • , Bin Chen
    • , Se-Woong Baek
    • , Amin Morteza Najarian
    • , Maral Vafaie
    • , Joshua Wicks
    • , Laxmi Kishore Sagar
    • , Sjoerd Hoogland
    • , F. Pelayo García de Arquer
    • , Oleksandr Voznyy
    •  & Edward H. Sargent
  • Research
    | Open Access

    Beneficiary defects could be utilized to introduce magnetism into materials that are not intrinsically magnetic. Here, the authors demonstrate long range magnetic order in the air-stable, defective Platinum Diselenide in the ultimate limit of thickness by using proximitized graphene as a probe.

    • Ahmet Avsar
    • , Cheol-Yeon Cheon
    • , Michele Pizzochero
    • , Mukesh Tripathi
    • , Alberto Ciarrocchi
    • , Oleg V. Yazyev
    •  & Andras Kis
  • Research
    | Open Access

    Exciton dynamics can be strongly affected by lattice vibrations through electron-phonon (e-ph) coupling. Here, the authors show the presence of strong e-ph coupling in bilayer CrI3 and observe a Raman feature with periodic broad modes up to the 8th order, attributed to the polaronic character of excitons.

    • Wencan Jin
    • , Hyun Ho Kim
    • , Zhipeng Ye
    • , Gaihua Ye
    • , Laura Rojas
    • , Xiangpeng Luo
    • , Bowen Yang
    • , Fangzhou Yin
    • , Jason Shih An Horng
    • , Shangjie Tian
    • , Yang Fu
    • , Gongjun Xu
    • , Hui Deng
    • , Hechang Lei
    • , Adam W. Tsen
    • , Kai Sun
    • , Rui He
    •  & Liuyan Zhao

News and Comment

  • News and Views |

    Correlated real-space imaging and optical measurements of twisted MoSe2/WSe2 bilayers reveal strain-induced modulations of the moiré potential landscape, tuning arrays of 0D traps into 1D stripes and leading to substantial changes in the optical response of the heterostructures.

    • Long Zhang
    •  & Hui Deng
    Nature Materials 19, 1044-1045
  • News and Views |

    The photovoltaics market has long been dominated by silicon, but further improvements of these solar cells require novel approaches. Now, triplet–triplet annihilation photon upconversion has been used to harvest photons from below the bandgap of silicon, extending the spectral response and potentially improving the efficiency of these cells.

    • Bo Albinsson
    •  & Axel Olesund
    Nature Photonics 14, 528-530
  • News and Views |

    The discovery of intrinsic quantum confinement effects in the form of oscillations in the optical absorption of formamidinium lead triiodide thin films is a vivid example of the surprising physical properties of these hybrid organic–inorganic materials.

    • Alejandro R. Goñi
  • Editorial |

    Two-dimensional materials could first find widespread commercial application in analogue electronics, rather than as a replacement for silicon in digital devices.

  • News and Views |

    The two-dimensional semiconductor Bi2O2Se can be oxidized to create an atomically thin layer of Bi2SeO5 that can be used as the insulator in scaled field-effect transistors.

    • Yury Yu. Illarionov
    • , Theresia Knobloch
    •  & Tibor Grasser
    Nature Electronics 3, 442-443