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Now showing items 31-40 of 171
Electrochemical impedance spectroscopy analysis of hole transporting material free mesoporous and planar perovskite solar cells
(
MDPI
, 2020 , Article Review)
The future photovoltaic technologies based on perovskite materials are aimed to build low tech, truly economical, easily fabricated, broadly deployable, and trustworthy solar cells. Hole transport material (HTM) free ...
Low-toxic, earth-abundant nanostructured materials for thermoelectric applications
(
MDPI AG
, 2021 , Article)
This article presents recent research directions in the study of Earth-abundant, cost-effective, and low-toxic advanced nanostructured materials for thermoelectric generator (TEG) applications. This study’s critical aspect ...
A STEM model to engage students in sustainable science education through sports: A case study in Qatar
(
MDPI
, 2021 , Article)
Sports has the potential to integrate with different scientific subjects, including materials science and engineering, making it an ideal approach to enhance the students’ affinity toward sustainable education in science, ...
Cultivating STEM Interest in High School Students through Computer-assisted COVID-19 Pandemic Awareness Course
(
IIKII
, 2022 , Article)
Due to the COVID-19 pandemic, students were sidetracked by the shift in the educational process, primarily in the field of STEM (science, technology, engineering, mathematics) education. Teachers were also besieged to find ...
Covid-19 inspired a stem-based virtual learning model for middle schools—a case study of Qatar
(
MDPI
, 2021 , Article)
An unprecedented turn in educational pedagogies due to the COVID-19 pandemic has significantly affected the students’ learning process worldwide. This article describes developing a STEM-based online course during the ...
The Prominent Roles of Undergraduate Mentors in an Online Near-Peer Mentoring Model
(
MDPI
, 2023 , Article)
This study exemplifies a STEM-based online near-peer mentoring approach, incorporating 56 students (high and middle school mentees) and 16 secondary undergraduates (UG) mentors. The various constructive roles of UG mentors ...
Exploring Teachers’ Perceptions of the Barriers to Teaching STEM in High Schools in Qatar
(
MDPI
, 2022 , Article)
Understanding teachers’ attitudes and perceptions of STEM teaching is a key pathway to enhance effective STEM teaching. Inarguably, teachers are the cornerstone of educational quality and play a central role in students’ ...
High school students' STEM interests and career aspirations in Qatar: An exploratory study
(
Elsevier
, 2023 , Article)
This study sought to explore high school students' interest in science, technology, engineering, and mathematics (STEM) related disciplines and careers in the context of Qatar. Quantitative data was collected using a survey ...
Design and optimization of four-terminal mechanically stacked and optically coupled silicon/perovskite tandem solar cells with over 28% efficiency
(
Elsevier
, 2023 , Article)
Silicon/perovskite tandem devices are believed to be a favorite contender for improving cell performance over the theoretical maximum value of single-junction photovoltaic (PV) cells. The present study evaluates the design ...
Optimum sintering method and temperature for cold compact Bismuth Telluride pellets for thermoelectric applications
(
Elsevier
, 2021 , Article)
This work intends to investigate the optimum sintering method and temperature that can improve the efficiency of bismuth telluride cold compact pellets, for the thermoelectric applications. Different p-type and n-type ...