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Showing 1–10 of 10 results
Advanced filters: Author: Wanyi Nie Clear advanced filters

  • Organometallic perovskite solar cells exhibit good efficiency but their photostability is still relatively poorly understood and controlled. Here the authors show that photo-degradation arises from the formation of light-activated meta-stable trap states, is reversible, and can be frozen at 0 °C.

    • Wanyi Nie
    • Jean-Christophe Blancon
    • Aditya D. Mohite
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-9

  • The limited durability of perovskite photovoltaics has held back the technology. New research unveils a class of low-dimensionality perovskites based on metals such as zinc, cobalt or copper that protects the 3D perovskite solar absorber from degradation while affording high efficiency.

    • Wanyi Nie
    News & Views
    Nature Energy
    Volume: 8, P: 222-223

  • Defect states in perovskites dictate the charge carriers behaviour, thus the ultimate optical and electrical properties. Here, the authors in-situ investigate trapped carrier dynamics in MAPbI3 thin films with ultra-fast temporal and high energetic resolution by means of ultrafast photocurrent spectroscopy.

    • Kanishka Kobbekaduwa
    • Shreetu Shrestha
    • Jianbo Gao
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-7

  • Solution-processed two-dimensional perovskite quantum-well-based optoelectronic devices have attracted great research interest but their electrical transport is poorly understood. Tsai et al. reveal that the potential barriers of the quantum wells dominate the transport properties in solar cell devices.

    • Hsinhan Tsai
    • Reza Asadpour
    • Wanyi Nie
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-9

  • Fabrication of a low-dimensional metal halide perovskite superlattice by chemical epitaxy is reported, with a criss-cross two-dimensional network parallel to the substrate, leading to efficient carrier transport in three dimensions.

    • Yusheng Lei
    • Yuheng Li
    • Sheng Xu
    Research
    Nature
    Volume: 608, P: 317-323

  • The limit of X-ray detection is an important figure of merit for X-ray detectors, yet the suitability of method adopted from Currie’s 1968 paper and the following international standard is in doubt. Here, the authors propose a statistical model that correlates dark current and photo-current, show how it can be used to determine detection limit.

    • Lei Pan
    • Shreetu Shrestha
    • Lei R. Cao
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-9

  • Electron sources play as important component in a wide range of applications. Here, the authors demonstrate efficient, regenerative, and low-cost electron sources based on solution-processed halide perovskite thin films with quantum efficiency up to 2.2% and a lifetime of more than 25 h.

    • Fangze Liu
    • Siraj Sidhik
    • Aditya D. Mohite
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • A solution-based lithography-assisted epitaxial-growth-and-transfer method is used to fabricate single-crystal hybrid perovskites on any surface, with precise control of the thickness, area and chemical composition gradient.

    • Yusheng Lei
    • Yimu Chen
    • Sheng Xu
    Research
    Nature
    Volume: 583, P: 790-795

  • Thin-film solar cells were fabricated using layered two-dimensional perovskites with near-single-crystalline out-of-plane alignment, which facilitates efficient charge transport leading to greatly improved power conversion efficiency with technologically relevant stability to light exposure, humidity and heat stress.

    • Hsinhan Tsai
    • Wanyi Nie
    • Aditya D. Mohite
    Research
    Nature
    Volume: 536, P: 312-316