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Article
Fabrication of triple cation perovskite solar cells using different post-spin coating anti-solvent treatments
One-step-antisolvent treatment is one of the most viable methods to increase the nucleation density for fabricating high-quality triple cation perovskite films (TC-PVS). The active triple cation perovskite lay...
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Article
Understanding the crystallization of triple-cation perovskites assisted by mixed antisolvents for improved solar cell device performance
In perovskite solar cells, the active perovskite layer is crucial in influencing the solar cell's efficiency. Crack-free perovskite films with enlarged grain size are essential for a highly efficient solar cel...
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Article
Improved photostability of inverted-structure perovskite solar cells with high power conversion efficiency by inserting CuI between PEDOT and MAPbI3 layers
Inverted-structure perovskite devices with PEDOT and PEDOT/CuI as hole transport layers (HTLs) were prepared on Glass/ITO substrates. Surface morphology observation of the CuI revealed that the CuI grew on PED...
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Article
Low Temperature Dopant Activation Using Variable Frequency Microwave Annealing
Variable frequency microwaves (VFM) and rapid thermal annealing (RTA) were used to activate ion implanted dopants and re-grow implant-damaged silicon. Four-point-probe measurements were used to determine the e...
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Article
Threshold Voltage Shift Variation of a-Si:H TFTs With Anneal Time
Hydrogenated amorphous silicon (a-Si:H) thin-film transistors (TFTs) are widely used in many areas and the most important application is in active matrix liquid crystal display. However, the instability of the...
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Article
Effect of excessive Pb on the stability and performance of Pb-halide perovskite solar cells against photo-induced degradation
Perovskite solar cells have evolved significantly since their inception. However, stability is still a major concern. We fabricated devices using a glass/IT0/PED0T:PSS/MAPbl3/PCBM/Ag device configuration. Devices...
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Article
Open AccessAn approach to optimize pre-annealing aging and anneal conditions to improve photovoltaic performance of perovskite solar cells
In this study, we reported a low-temperature, one-step solution process to fabricate perovskite solar cells using dehydrated lead acetate as the lead source. These perovskite films were aged at 200 s before th...
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Article
Development of low-fluorine solution route and UV photolysis process for YBa2Cu3O7−x coated conductors
The influence of the content of trifluoroacetate (TFA), in the precursor solution, on the critical current density (Jc) of YBa2Cu3O7−x (YBCO) superconducting films was investigated. We found that a TFA/Ba ratio o...
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Article
Fabrication of PZT/CuO composite films and their photovoltaic properties
The existence of the Schottky barriers at the top and bottom electrodes of the ferroelectric thin film sandwich structure makes it difficult to separate and collect electron-hole pairs, thus limiting the enhan...
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Chapter
The Extent of Dopant Activation after Microwave and Rapid Thermal Anneals Using Similar Heating Profiles
Many sustainability issues arise during the manufacturing processes that are currently used for solar cells. Solar energy is a renewable energy source that is independent of the earth’s resources, and it is th...
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Article
Controlled Microwave Processing of IGZO Thin Films for Improved Optical and Electrical Properties
Amorphous indium gallium zinc oxides (IGZO) of 100 nm thickness were deposited onto glass substrates by sputtering at room temperature. The films were subsequently annealed in air, vacuum, forming gas and O2 envi...
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Article
A Method for Efficient Transmittance Spectrum Prediction of Transparent Composite Electrodes
The interest in indium-free transparent composite electrode (TCE), a thin metal layer embedded between two transparent metal oxide (TMO) layers resulting in TMO/metal/TMO composite structure, has grown recentl...
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Article
Effect of Different Substrates on the Wettability and Electrical Properties of Au Thin Films Deposited by Sputtering
The compatibility of gold with underlying substrate materials is important for device performance and reliability. Gold nanolayers of various thicknesses (4–14 nm) are deposited onto different substrates (glas...
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Article
Effect of Gold Thickness and Annealing on Optical and Electrical Properties of TiO2/Au/TiO2 Multilayers as Transparent Composite Electrode on Flexible Substrate
Multilayer structures of TiO2/Au/TiO2 have been deposited onto flexible substrates by room temperature sputtering to develop indium-free transparent composite electrodes (TCEs). The effect of Au thicknesses on op...
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Article
Effect of Silver thickness and Annealing on Optical and Electrical Properties of Nb2O5/Ag/Nb2O5 Multilayers as Transparent Composite Electrode on Flexible Substrate
Multilayer structures of Nb2O5/Ag/Nb2O5 have been deposited onto flexible substrates by sputtering at room temperature to develop indium free composite transparent conductive electrodes. The optical and electrica...
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Article
High Mobility IGZO/ITO Double-layered Transparent Composite Electrode: A Thermal Stability Study
The fabrication of a thin film optoelectronic device involves the exposure of the transparent conductive oxide (TCO) to a high process temperature. Indium gallium zinc oxide (InGaZnO4 or IGZO) is a well known TCO...
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Article
Optimization of IGZO/Cu/IGZO Multilayers as Transparent Composite Electrode on Flexible Substrate by Room-temperature Sputtering and Post-Deposition Anneals
Highly transparent composite electrodes made of multilayers of In- and Ga-doped ZnO and Cu (IGZO/Cu/IGZO) thin films (30/3-9/30 nm thick) are deposited onto flexible substrates at room temperature and by using...
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Article
Characterization and Adhesion in Cu/Ru/SiO2/Si Multilayer Nano-scale Structure for Cu Metallization
In this study, we have characterized the microstructure, resistivity, and dynamic deformation behavior of Cu/Ru/SiO2 and Cu/SiO2 samples under scratch loading conditions. Cu/Ru/SiO2 samples showed higher elastic ...
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Article
Reflectance Spectroscopy of Functional Ag-Cu Thin Films: Correlation of Reflectivity with Cu Content
We have investigated the optical properties of sputter-deposited silver-copper alloy thin films on silicon substrates at room temperature. We found that alloying copper with silver can significantly improve th...
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Article
Effect of Low-Temperature Microwave Processing and Copper Content on the Properties of Ag-Cu Thin Film Binary Alloys
The effects of Cu content on the electrical and structural properties of Ag-Cu thin films were studied before and after microwave processing. Copper was chosen as the alloying element because of its low solubi...
