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首页> 外文期刊>RSC Advances >Influence of the rate of radiation energy on the charge-carrier kinetics application of all-inorganic CsPbBr(3)perovskite nanocrystals
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Influence of the rate of radiation energy on the charge-carrier kinetics application of all-inorganic CsPbBr(3)perovskite nanocrystals

机译:辐射能量对全无机CSPBBR(3)钙钛矿纳米晶体电荷载体动力学应用的影响

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摘要

In the field of optoelectronics, all-inorganic CsPbBr(3)perovskite nanocrystals (PNCs) have gained significant interest on account of their superb processability and ultra-high stability among all the counterparts. In this study, we conducted an in-depth analysis of CsPbBr3PNCs using joint transient optical spectroscopies (time-resolved photoluminescence and ultrafast transient absorption) in a very comprehensive manner. In order to understand the in-depth analysis of excited-state kinetics, the transient absorption spectroscopy has been performed. The structure of interest of CsPbBr3PNCs was subjected to the rates of the radiation energy of 0.10 mW (kappa(r)/kappa(nr)= similar to 0.62) and 0.30 mW (kappa(r)/kappa(nr)= similar to 0.64). With the rate of radiation energy 0.30 mW, it was observed that there was a significant increase in hot carrier relaxation together with high radiative recombination, resulting in a decrease in charge trappings. Herein, we demonstrate that the tuning of the rate of radiation energies helps to understand the charge-carrier kinetics of CsPbBr3PNCs, which would thus improve the manufacturing of efficient photovoltaic devices.
机译:在光电子技术领域,全无机CSPBBR(3)钙钛矿纳米晶体(PNC)由于其所有对应物中的超级加工性和超高稳定性而获得了显着的兴趣。在本研究中,我们使用关节瞬态光谱(时间分辨的光致发光和超快瞬态吸收)对CSPBBR3PNC进行了深入的分析。为了理解激发状态动力学的深入分析,已经进行了瞬态吸收光谱。 CSPBBR3PNCS的兴趣结构经受0.10mW的辐射能量的速率(Kappa(R)/κ(NR)=与0.62)和0.30mW(κ(r)/ kappa(nr)=类似于0.64 )。随着辐射能量0.30mW的速率,观察到热载体弛豫的显着增加以及高辐射重组,导致充电陷阱降低。在本文中,我们表明,辐射能量的速率的调谐有助于理解CsPbBr3PNCs的电荷载流子动力学,从而这将提高制造效率的光伏器件。

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  • 来源
    《RSC Advances》 |2020年第57期|共7页
  • 作者单位

    Jawaharlal Nehru Univ JNU Sch Phys Sci Nanotechnol Lab New Delhi 110067 India;

    Jamia Millia Islamia Ctr Nanosci &

    Nanotechnol Quantum &

    Nanophoton Res Lab New Delhi 110025 India;

    Jawaharlal Nehru Univ JNU Sch Phys Sci Nanotechnol Lab New Delhi 110067 India;

    Acad Sci &

    Innovat Res AcSIR Ghaziabad 201002 India;

    CSIR Natl Phys Lab Dr KS Krishnan Rd New Delhi 110012 India;

    CSIR Natl Phys Lab Dr KS Krishnan Rd New Delhi 110012 India;

    Jamia Millia Islamia Ctr Nanosci &

    Nanotechnol Quantum &

    Nanophoton Res Lab New Delhi 110025 India;

    Jawaharlal Nehru Univ JNU Sch Phys Sci Nanotechnol Lab New Delhi 110067 India;

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  • 正文语种 eng
  • 中图分类 化学;
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