Ultra-Low Thermal Conductivity in Organic-Inorganic Hybrid Perovskite CH3NH3PbI3

被引：432

作者：

Pisoni, Andrea ^{[1
]}

Jacimovic, Jacim ^{[1
]}

Barisic, Osor S. ^{[2
]}

Spina, Massimo ^{[1
]}

Gaal, Richard ^{[1
]}

Forro, Laszlo ^{[1
]}

Horvath, Endre ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Phys Complex Matter, CH-1015 Lausanne, Switzerland

[2] Inst Phys, HR-10000 Zagreb, Croatia

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2014年 / 5卷 / 14期

基金：

瑞士国家科学基金会;

关键词：

PHASE-TRANSITIONS; LENGTHS;

D O I：

10.1021/jz5012109

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on the temperature dependence of thermal conductivity of single crystalline and polycrystalline organometallic perovskite CH3NH3PbI3. The comparable absolute values and temperature dependence of the two samples' morphologies indicate the minor role of the grain boundaries on the heat transport. Theoretical modeling demonstrates the importance of the resonant scattering in both specimens. The interaction between phonon waves and rotational degrees of freedom of CH3NH3+ sublattice emerges as the dominant mechanism for attenuation of heat transport and for ultralow thermal conductivity of 0.5 W/(Km) at room temperature.

引用

页码：2488 / 2492

页数：5

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