A5073861251- Perovskite Materials and Applications
- Silicon and Solar Cell Technologies
- Thin-Film Transistor Technologies
- Semiconductor materials and interfaces
- 2D Materials and Applications
- Conducting polymers and applications
- Graphene research and applications
- solar cell performance optimization
- Innovations in Concrete and Construction Materials
- Chalcogenide Semiconductor Thin Films
- MXene and MAX Phase Materials
- Organic Electronics and Photovoltaics
- Innovative concrete reinforcement materials
- Silicon Nanostructures and Photoluminescence
- Recycled Aggregate Concrete Performance
- Nanowire Synthesis and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- Transition Metal Oxide Nanomaterials
- Silicon Carbide Semiconductor Technologies
- Traffic and Road Safety
- Structural Behavior of Reinforced Concrete
- Advancements in Semiconductor Devices and Circuit Design
- Optical Coatings and Gratings
- Solid-state spectroscopy and crystallography
- BIM and Construction Integration
University of Lahore
2019-2024
King Abdullah University of Science and Technology
2020-2023
Kootenay Association for Science & Technology
2021
Physical Sciences (United States)
2021
Sarhad University of Science and Information Technology
2018-2020
Sejong University
2013-2018
Gwangju University
2017
If perovskite solar cells (PSCs) with high power conversion efficiencies (PCEs) are to be commercialized, they must achieve long-term stability, which is usually assessed accelerated degradation tests. One of the persistent obstacles for PSCs has been successfully passing damp-heat test (85°C and 85% relative humidity), standard verifying stability commercial photovoltaic (PV) modules. We fabricated damp heat-stable by tailoring dimensional fragments two-dimensional layers formed at room...
The performance of perovskite solar cells with inverted polarity (p-i-n) is still limited by recombination at their electron extraction interface, which also lowers the power conversion efficiency (PCE) p-i-n perovskite-silicon tandem cells. A MgF x interlayer thickness ~1 nanometer perovskite/C 60 interface favorably adjusts surface energy layer through thermal evaporation, facilitates efficient and displaces C from to mitigate nonradiative recombination. These effects enable a champion...
Abstract Sputtered nickel oxide (NiO x ) is an attractive hole‐transport layer for efficient, stable, and large‐area p‐i‐n metal‐halide perovskite solar cells (PSCs). However, surface traps undesirable chemical reactions at the NiO /perovskite interface are limiting performance of ‐based PSCs. To address these issues simultaneously, efficient passivation strategy by using organometallic dye molecule (N719) reported. This concurrently passivates traps, facilitates charge transport....
27%-efficient perovskite/silicon tandem solar cells are achieved in n–i–p configuration by developing novel electron and hole selective contacts, which combine high broadband transparency with efficient charge extraction.
Perovskite/silicon tandem solar cells are emerging as a high-efficiency and prospectively cost-effective technology with great promise for deployment at the utility scale. However, despite remarkable performance progress reported lately, assuring sufficient device stability—particularly of perovskite top cell—remains challenge on path to practical impact. In this work, we analyze outdoor encapsulated bifacial perovskite/silicon tandems, by carrying out field-testing in Saudi Arabia. Over six...
Two-dimensional transition metal carbides (MXenes) are of great interest as electrode materials for a variety applications, including solar cells, due to their tunable optoelectronic properties, high metallic conductivity, and attractive solution processability. However, thus far, MXene electrodes have only been exploited lab-scale device applications. Here, demonstrate the potential at an industry-relevant level, we implemented scalable spray coating technique deposit highly conductive (ca....
Molybdenum disulfide (MoS2) has recently emerged as a promising candidate for fabricating ultrathin-film photovoltaic devices. These devices exhibit excellent performance, superior flexibility, and low production cost. Layered MoS2 deposited on p-Si establishes built-in electric field at MoS2/Si interface that helps in photogenerated carrier separation operation. We propose an Al2O3-based passivation the surface to improve performance of bulklike solar cells. Interestingly, it was observed...
Abstract Textured silicon wafers used in solar cell manufacturing offer superior light trapping, which is a critical enabler for high‐performance photovoltaics. A similar optical benefit can be obtained monolithic perovskite/silicon tandem cells, enhancing the current output of bottom cell. Yet, such complex surfaces may affect structural and optoelectronic properties overlying perovskite films. Here, through extensive characterization based on microstructural spectroscopy, it found that...
Despite great progress in perovskite/silicon tandem solar cells' device performance, their susceptibility to potential-induced degradation (PID) remains unexplored. In this study, we find that applying a voltage bias of −1,000 V single-device modules at 60°C for ∼1 day can cause ∼50% loss power conversion efficiency, which raises concerns commercialization. We found no accumulation Na+ the perovskite or silicon photon absorbers. Consequently, obvious shunt is observed our subcells. also...
Noble metal dichalcogenides (NMDs) are two-dimensional (2D) layered materials that exhibit outstanding thickness-dependent tunable-bandgaps can be suitable for various optoelectronic applications.
Perovskite/silicon tandem photovoltaics is a promising technology to exceed the performance limit of single-junction solar cells. For utility-scale photovoltaic plants, trends and forecasts indicate that bifacial modules mounted on trackers will increasingly dominate market in next 20 years. In line with this roadmap, we investigate outdoor perovskite/silicon cells horizontal single-axis tracker an environment elevated insolation albedo. We experimentally demonstrate such conditions...
This research elucidates interfacial tension behavior of nanofluid Al2O3, CuO and ZnO. The synthesis was facilitated by sol gel method. features are elaborated employing SEM, XRD RAMAN. soft CASTEP Material studio considered to simulate energy band gap, partial density states dielectric constant. analysis conducted placing crude oil. outcomes reveal that behaviour along with significantly varies across the nanofluids. extravagant performance ZnO-based is witnessed in comparison other...
Abstract Metal halide perovskites have emerged in recent years as promising photovoltaic materials due to their excellent optical and electrical properties, enabling perovskite solar cells (PSCs) with certified power conversion efficiencies (PCEs) greater than 25%. Provided radiative recombination is the dominant mechanism, photon recycling – process of reabsorption (and re-emission) photons that result from can be utilized further enhance PCE toward Shockley–Queisser (S-Q) theoretical...
Abstract Monolithic perovskite/silicon tandem solar cells have the potential to reach very high power conversion efficiencies ( PCE s) in a cost‐effective manner. In last decade, significant technological advancements been made for lab‐scale devices (~1 cm 2 ), with s now higher than theoretical limit of single‐junction silicon cells. For market entry such tandems, involved processing steps need be scaled industrial wafer dimensions, typically >244 , which also mandates development...
A two-dimensional (2D) layered material-based p-n diode is an essential element in the modern semiconductor industry for facilitating miniaturization and structural flexibility of devices with high efficiency future optoelectronic electronic applications. Planar constructed previously required a complicated device structure using photoresist, as they needed to consider non-abrupt interfaces. Here, we demonstrated WSe2 based lateral homojunction obtained by applying photo-induced effect...
Abstract Here, van der Waals multi‐heterojunctions (PN, NP, PIN, and NPN) are fabricated by stacking of MoTe 2 , hexagonal boron nitride (h‐BN), MoSe nanoflakes using a mechanical‐exfoliation technique where the dynamic rectification is examined. Low‐resistance metal contacts Al/Au Pt/Au applied to respectively, gate‐dependent rectifying behavior achieved, with ratio up 10 5 in PN devices. It found that performance device enhanced placing an interfacial layer h‐BN between two opposite layers...