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      Pemodelan Harmonik Generasi Kedua Pada Struktur Kristal Perovskite (MAPbI3) Menggunakan Metode Ikat Hiperpolarisabilitas Sederhana Nonlinier.

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      Date
      2019
      Author
      Priatama, Mohammad Ryan
      Hardhienata, Hendradi
      Sumaryada, Tony Ibnu
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      Abstract
      Metilamonium timbal iodida (MAPbI3) dikenal memiliki struktur fase transisi yang bergantung suhu. MAPbI3 memiliki bulk point group dan surface point group pada kristal sentrosimetrik berupa 4/mmm (simetri D4h) dan mm2 (simetri C2v). Bulk point group pada kristal non-sentrosimerik adalah 4mm (simetri C4v). Penelitian ini meninjau second harmonic generation (SHG) pada MAPbI3 simetri C2v dan D4h dengan simplified bond hyperpolarizability model (SBHM). Pada kristal sentrosimetrik simeri D4h terdapat inversi simetri yang menyebabkan elektrik dipol terinduksi SHG menjadi terlarang, namun tidak berlaku pada permukaan simetri C2v karena inversi simetri hampir tidak ada. Hasil SBHM menunjukkan terdapat intensitas SHG pada simetri C2v dan tidak ada intesitas SHG pada simetri D4h.
      URI
      http://repository.ipb.ac.id/handle/123456789/102417
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      Copyright © 2020 Library of IPB University
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      Contact Us | Send Feedback
      Indonesia DSpace Group 
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