Time-resolved operando analysis of the pyrolysis of a PECVD-deposited siloxane polymer using a combined DRIFTS–MS system

Time-resolved operando analysis of the pyrolysis of a PECVD-deposited siloxane polymer using a combined DRIFTS–MS system
复制标题

使用组合 DRIFTS–MS 系统对 PECVD 沉积的硅氧烷聚合物的热解进行时间分辨操作分析

DOI:
10.1039/d3me00032j
复制
发表时间:
2023
影响因子:
3.6
通讯作者:
Tsotsis, Theodore
Tsotsis, Theodore
中科院分区:
工程技术3区
文献类型:
--
作者:
Nguyen, Bryan;Tabarkhoon, Farnaz;Zhao, Linghao;Mishra, Ankit;Gupta, Malancha;Vashishta, Priya;Tsotsis, Theodore

文献摘要

参考文献

相似文献

硅型薄膜由二氧化硅、碳化硅(SIC)或碳氧化合物制成,可用作薄膜和电子传感器,以及半导体和太阳能应用。以前,我们研究了通过化学气相沉积(ICVD)在碳化硅大孔衬底上沉积poly(1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane)(PV4D4)薄膜及其随后的可控气氛热解来制备纳米多孔二氧化硅薄膜。在这里,我们利用一种不同的方法,等离子体增强化学气相沉积(PECVD),以比iCVD高得多的沉积速度在各种衬底上沉积pV4D4薄膜,并使用一些实验技术来综合研究这些薄膜通过可控气氛热解转化为二氧化硅陶瓷的机理。这些研究的目的是为了更好地了解制备条件对所得到的陶瓷薄膜的结构和性能的影响。这些实验与采用反应力场(ReaxFF)的热解过程的互补分子模拟相结合。这使得在分子水平上更好地理解了通过热解将pV4D4聚合物转化为二氧化硅陶瓷过程中发生的过程。
Silicon-type thin films, made of silica, silicon carbide (SiC), or oxycarbide, find use as membranes and electronic sensors, and in semiconductor and solar energy applications. Previously, we studied the preparation of nanoporous silica membranes via deposition of poly(1,3,5,7-tetravinyl-1,3,5,7-tetramethylcyclotetrasiloxane) (pV4D4) films onto SiC macroporous substrates via initiated chemical vapor deposition (iCVD) and their subsequent controlled-atmosphere pyrolysis. Here, we utilize a different method, plasma-enhanced chemical vapor deposition (PECVD), to deposit thin pV4D4 films onto a variety of substrates at significantly higher deposition rates than iCVD and employ a number of experimental techniques to comprehensively investigate the mechanism of conversion of these films into silica ceramics via controlled-atmosphere pyrolysis. The aim of these studies is to better understand the impact of preparation conditions on the structure and properties of the resulting ceramic films. The experiments are coupled with complementary molecular simulations of the pyrolysis process that employ a reactive force field (ReaxFF). This has allowed better understanding, at the molecular level, of the processes that take place during the conversion, via pyrolysis, of the pV4D4 polymer into a silica ceramic.
用于煤基多联产电厂超高效氢气 (H2) 生产/二氧化碳 (CO2) 捕获的先进陶瓷膜/模块:制造、测试和 CFD 建模
DOI: --
发表时间: 2022
期刊: 39th Annual International Pittsburgh Coal Conference, 2022
影响因子: --
作者:
Mohammad Bazmi;T. Tsotsis;K. Jessen;R. Ciora;D. Parsley
通讯作者: D. Parsley
DOI: --
发表时间: 1997
期刊:
影响因子: --
作者:
T. Fujii;T. Yokoi;M. Hiramatsu;M. Nawata;M. Hori;T. Goto;S. Hattori
通讯作者: S. Hattori
DOI: 10.1111/j.1151-2916.1990.tb06499.x
发表时间: 1990-02-01
影响因子: 3.9
作者:
CARLSSON, DJ;COONEY, JD;WORSFOLD, DJ
通讯作者: WORSFOLD, DJ
通过等离子体引发化学气相沉积在大气压下合成原子级光滑、保形和超薄低 k 聚合物绝缘层
DOI: --
发表时间: 2019
影响因子: 5
作者:
Dominique Abessolo Ondo;François Loyer;F. Werner;R. Leturcq;P. Dale;N. Boscher
通讯作者: N. Boscher
RXMD:可扩展的反应分子动力学模拟器,可优化解决方案时间
DOI: 10.1016/j.softx.2019.100389
发表时间: 2020
期刊: SoftwareX
影响因子: 3.4
作者:
K. Nomura;R. Kalia;A. Nakano;P. Rajak;P. Vashishta
通讯作者: P. Vashishta