Ostwald ripening effectstabilityTin-based perovskite solar cells (PVSCs) are regarded as the most promising alternative among lead-free PVSCs. However, the rapid crystallization for tin-based perovskite tends to cause inferior film morphology and abundant defect states, which make poor photovoltaic ...
还有,Alivisatos最近报道的Kirkendall Effect 也能形成单晶结构,在其论文中报道了通过这种机理形成的直径只有几十个纳米的单晶空心球,这种结构以传统的Ostwald ripening来看貌似是不可实现的,但通过别的生长机理就能成为现实。Ostwald发生的过程包括小于一个临界尺寸的粒子的溶解,然后质量转移到大于这个临界尺寸...
还有,Alivisatos最近报道的Kirkendall Effect也能形成单晶结构,在其论文中报道了通过这种机理形成的直径只有几十个纳米的单晶空心球,这种结构以传统的Ostwald ripening来看貌似是不可实现的,但通过别的生长机理就能成为现实。 Ostwald发生的过程包括小于一个临界尺寸的粒子的溶解,然后质量转移到大于这个临界尺寸的粒子上. ...
oswald熟化,是指大颗粒长大和小颗粒逐渐消失的一种现象,是大颗粒吞并小颗粒的一种模型,引起这一现象...
It is known that by the phenomenon of Ostwald Ripening (OR) process, morphological changes in colloidal solution takes place; larger particles grow in size with time at the expense of smaller particles. We studied the OR effect on the physicochemical properties of the growing SDS-CTAB interacted...
ostwald ripening可以这样理解,由于小颗粒的溶解度比大颗粒大,因此在生长过程中会出现小颗粒溶解,大颗粒长大的现象,这与其小颗粒的热力学稳定性差有关。此外熟化现象也会形成空心结构,这在近几年研究的论文很 ... 出现啦!老戴! 展开 1 评论0 举报 极简,设备工程师 2018-03-17回答 jacs最新发表电镜下观察ostw...
9.9B. This is the process called “Ostwald ripening”, that is grain-coarsening of material belonging to the same phase. Near point 2, the effect of surface area on opal-A solubility becomes negligible and opal-CT, the solid silica phase with the next lower solubility, shall precipitate. ...
对于空心结构生长机理的研究,最重要的两种机理是柯根达尔效应(Kirkendall Effect)和奥斯特瓦尔德熟化机理(Ostwald Ripening),前者主要特点是生长前后为异相,而后者为相同物相的溶解-再结晶过程。附件为介绍这两个生长机理的经典文献。分别为: 1. Formation of Hollow Nanocrystals Through the Nanoscale Kirkendall Effect ...
这种生长机理形成的单晶的特点同Ostwald ripening不同,OR形成的单晶大多是规则的,给材料本身晶体结构相关,而OA形成的单晶结构在形貌上则没有限制,任何形状和结构的单晶材料都能通过此机理形成。还有,Alivisatos最近报道的Kirkendall Effect 也能形成单晶结构,在其论文中报道了通过这种机理形成的直径只有几...