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Blue-Emitting Diode Shows Limitations and Promise of Perovskite Semiconductors

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BERKELEY, Calif., Feb. 18, 2020 — Scientists at the University of California, Berkeley, have created a blue light-emitting diode (LED) from halide perovskite, a new semiconductor material said to be cheap and easy to manufacture, overcoming a barrier that had previously prevented the employment of the devices. However, in the process, the team also discovered a fundamental property of halide perovskites that may prove a barrier to their widespread use as solar cells and transistors. In a paper appearing in the journal Science Advances, UC Berkeley chemist Peidong Yang and his colleagues show that the crystal structure...Read full article

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    Published: February 2020
    Glossary
    gallium nitride
    Gallium nitride (GaN) is a compound made up of gallium (Ga) and nitrogen (N). It is a wide-bandgap semiconductor material that exhibits unique electrical and optical properties. Gallium nitride is widely used in the production of various electronic and optoelectronic devices, including light-emitting diodes (LEDs), laser diodes, power electronics, and high-frequency communication devices. Key points about gallium nitride (GaN): Chemical composition: Gallium nitride is a binary compound...
    transistor
    An electronic device consisting of a semiconductor material, generally germanium or silicon, and used for rectification, amplification and switching. Its mode of operation utilizes transmission across the junction of the donor electrons and holes.
    Research & TechnologyCaliforniaUC Berkeleyhalide perovskitessemiconductorsgallium nitridesolar cellstransistorBerkeley LabLight SourcesMaterials

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