Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure

Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure

In situ impedance measurements, Raman measurements and theoretical calculations were performed to investigate the electrical transport and vibrational properties of polycrystalline phenanthrene. Two phase transitions were observed in the Raman spectra at 2.3 and 5.9 GPa, while phenanthrene transform...

Full description

Bibliographic Details
Main Authors: Xiaofeng Wang, Qinglin Wang, Tianru Qin, Guozhao Zhang, Haiwa Zhang, Dandan Sang, Cong Wang, Jianfu Li, Xiaoli Wang, Cailong Liu
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-09-01
Series:Frontiers in Physics
Subjects:
phenanthrene
high pressure
dielectric
grain boundary
phase transition
Online Access:https://www.frontiersin.org/articles/10.3389/fphy.2021.746915/full
id doaj-bb58d33b15f44afa9348e0711d9f3263
record_format Article
spelling doaj-bb58d33b15f44afa9348e0711d9f32632021-09-16T04:40:05ZengFrontiers Media S.A.Frontiers in Physics2296-424X2021-09-01910.3389/fphy.2021.746915746915Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High PressureXiaofeng Wang0Qinglin Wang1Tianru Qin2Guozhao Zhang3Haiwa Zhang4Dandan Sang5Cong Wang6Jianfu Li7Xiaoli Wang8Cailong Liu9Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, ChinaShandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, ChinaHeilongjiang Province Key Laboratory of Superhard Materials, Department of Physics, Mudanjiang Normal University, Mudanjiang, ChinaShandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, ChinaShandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, ChinaShandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, ChinaCollege of Mathematics and Physics, Beijing University of Chemical Technology, Beijing, ChinaSchool of Opto-electronic Information Science and Technology, Yantai University, Yantai, ChinaSchool of Opto-electronic Information Science and Technology, Yantai University, Yantai, ChinaShandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology, Liaocheng University, Liaocheng, ChinaIn situ impedance measurements, Raman measurements and theoretical calculations were performed to investigate the electrical transport and vibrational properties of polycrystalline phenanthrene. Two phase transitions were observed in the Raman spectra at 2.3 and 5.9 GPa, while phenanthrene transformed into an amorphous phase above 12.1 GPa. Three discontinuous changes in bulk and grain boundary resistance and relaxation frequency with pressure were attributed to the structural phase transitions. Grain boundaries were found to play a dominant role in the carrier transport process of phenanthrene. The dielectric performance of phenanthrene was effectively improved by pressure. A significant mismatch between Z″ and M″ peaks was observed, which was attributed to the localized electronic conduction in phenanthrene. Theoretical calculations showed that the intramolecular interactions were enhanced under compression. This study offers new insight into the electrical properties as well as grain boundary effect in organic semiconductors at high pressure.https://www.frontiersin.org/articles/10.3389/fphy.2021.746915/fullphenanthrenehigh pressuredielectricgrain boundaryphase transition
collection DOAJ
language English
format Article
sources DOAJ
author Xiaofeng Wang
Qinglin Wang
Tianru Qin
Guozhao Zhang
Haiwa Zhang
Dandan Sang
Cong Wang
Jianfu Li
Xiaoli Wang
Cailong Liu
spellingShingle Xiaofeng Wang
Qinglin Wang
Tianru Qin
Guozhao Zhang
Haiwa Zhang
Dandan Sang
Cong Wang
Jianfu Li
Xiaoli Wang
Cailong Liu
Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure
Frontiers in Physics
phenanthrene
high pressure
dielectric
grain boundary
phase transition
author_facet Xiaofeng Wang
Qinglin Wang
Tianru Qin
Guozhao Zhang
Haiwa Zhang
Dandan Sang
Cong Wang
Jianfu Li
Xiaoli Wang
Cailong Liu
author_sort Xiaofeng Wang
title Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure
title_short Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure
title_full Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure
title_fullStr Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure
title_full_unstemmed Improved Dielectric Properties and Grain Boundary Effect of Phenanthrene Under High Pressure
title_sort improved dielectric properties and grain boundary effect of phenanthrene under high pressure
publisher Frontiers Media S.A.
series Frontiers in Physics
issn 2296-424X
publishDate 2021-09-01
description In situ impedance measurements, Raman measurements and theoretical calculations were performed to investigate the electrical transport and vibrational properties of polycrystalline phenanthrene. Two phase transitions were observed in the Raman spectra at 2.3 and 5.9 GPa, while phenanthrene transformed into an amorphous phase above 12.1 GPa. Three discontinuous changes in bulk and grain boundary resistance and relaxation frequency with pressure were attributed to the structural phase transitions. Grain boundaries were found to play a dominant role in the carrier transport process of phenanthrene. The dielectric performance of phenanthrene was effectively improved by pressure. A significant mismatch between Z″ and M″ peaks was observed, which was attributed to the localized electronic conduction in phenanthrene. Theoretical calculations showed that the intramolecular interactions were enhanced under compression. This study offers new insight into the electrical properties as well as grain boundary effect in organic semiconductors at high pressure.
topic phenanthrene
high pressure
dielectric
grain boundary
phase transition
url https://www.frontiersin.org/articles/10.3389/fphy.2021.746915/full
work_keys_str_mv AT xiaofengwang improveddielectricpropertiesandgrainboundaryeffectofphenanthreneunderhighpressure
AT qinglinwang improveddielectricpropertiesandgrainboundaryeffectofphenanthreneunderhighpressure
AT tianruqin improveddielectricpropertiesandgrainboundaryeffectofphenanthreneunderhighpressure
AT guozhaozhang improveddielectricpropertiesandgrainboundaryeffectofphenanthreneunderhighpressure
AT haiwazhang improveddielectricpropertiesandgrainboundaryeffectofphenanthreneunderhighpressure
AT dandansang improveddielectricpropertiesandgrainboundaryeffectofphenanthreneunderhighpressure
AT congwang improveddielectricpropertiesandgrainboundaryeffectofphenanthreneunderhighpressure
AT jianfuli improveddielectricpropertiesandgrainboundaryeffectofphenanthreneunderhighpressure
AT xiaoliwang improveddielectricpropertiesandgrainboundaryeffectofphenanthreneunderhighpressure
AT cailongliu improveddielectricpropertiesandgrainboundaryeffectofphenanthreneunderhighpressure
_version_ 1717378423800725504

Similar Items