Loading...
Search for:
interface-modification
0.011 seconds
Effect of crystallinity and morphology of TiO2 nano-structures on TiO2 :P3HT hybrid photovoltaic solar cells
,
Article
Applied Solar Energy (English translation of Geliotekhnika)
;
Volume 51, Issue 1
,
January
,
2015
,
Pages 34-40
;
0003701X (ISSN)
; Kasaeian, A. B
; Nikfarjam, A
; Akbarzadeh, A
; Mohammadpour, R
;
Sharif University of Technology
Allerton Press Incorporation
2015
Abstract
A comparative study has been made of hybrid solar cells based on poly(3-hexylthiophene) (P3HT) and different nano-structures of TiO2 . Electrospinning, which is a low cost production method for large area nanofibrous films, was employed to fabricate TiO2 nanofibers and spin coating method was employed to fabricate organic-inorganic hybrid solar cells based on P3HT and TiO2 nanostructures. The performance of the hybrid solar cells was analyzed for four density levels of the TiO2 nanostructure. It was found that higher densities of TiO2 leads to more interface area and generates excitons, so that the power conversion efficiency increases to...
Gold nanoparticles functionalized with fullerene derivative as an effective interface layer for improving the efficiency and stability of planar perovskite solar cells
, Article Advanced Materials Interfaces ; Volume 7, Issue 21 , 2020 ; Prochowicz, D ; Bończak, B ; Tavakoli, M. M ; Yadav, P ; Fiałkowski, M ; Hong, C. K ; Sharif University of Technology
Wiley-VCH Verlag
2020
Abstract
Titanium dioxide (TiO2) is an extensively used electron transporting layer (ETL) in n–i–p perovskite solar cells (PSCs). Although, TiO2 ETL experiences the high surface defect together with low electron extraction ability, which causes severe energy loss and poor stability in the PSC. In this study, a new intermediate layer consisting of gold nanoparticles functionalized with fully conjugated fullerene C60 derivative (C60-BCT@Au NPs) that enhances the interfacial contact at ETL/perovskite interface leading to a perovskite film with improved crystallinity and morphology is reported. Moreover, the studies demonstrate that the interface modification of the TiO2 ETL with C60-BCT@Au NPs...
Modification of rock/fluid and fluid/fluid interfaces during MEOR processes, using two biosurfactant producing strains of Bacillus stearothermophilus SUCPM#14 and Enterobacter cloacae: A mechanistic study
, Article Colloids and Surfaces B: Biointerfaces ; Vol. 117 , May , 2014 , pp. 457-465 ; ISSN: 09277765 ; Zeinolabedini Hezave, A ; Mohammadi, S ; Niazi, A ; Ayatollahi, S ; Sharif University of Technology
Abstract
During any microbial enhanced oil recovery process, both cells and the metabolic products of bacteria govern the tertiary oil recovery efficiency. However, very accurate examination is needed to find the functionality of these tiny creatures at different reservoir conditions. In this regard, the effect of cell structure on ultimate microbial recovery efficiency which is the most dominant mechanism based on the microorganism types (gram-negative or gram-positive) was systematically investigated. At the first stage, possible different active mechanisms using Bacillus stearothermophilus SUCPM#14 strain were tested using specially designed injection protocol, in situ and ex situ core flooding...