- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Laser Direct Writing Assisted Fabrication of Skin Compatible Metal Electrodes
摘要： Skin-compatible electrodes have been studied intensively for its application in wearable electronics. To satisfy various deformations of electronic skin, it requires to fabricate a highly conductive, mechanically stable, flexible, and stretchable electrode. Here, a feasible laser direct writing (LDW) process is carried out to fabricate micro-spring structured metal electrodes. The metal electrodes show high conductivity and transparency with sheet resistance of 4.8 ohm per square and at transmittance of 83%. It is worthy of noting that, the metal electrodes have an excellent mechanical–electrical stability, where stretching over 75% and bending over 5000 times induces resistance variance less than 5% and 2%, respectively. The excellent mechanical and electrical behavior of the micro-spring metal electrodes are promising to be useful for wearable electronics. The LDW process may facilitate the design and prototype of the skin compatible metal electrodes in the coming future.
关键词： wearable electronics,skin-compatible electrodes,electro-deposition,laser direct writing
更新于2025-09-23 15:21:01
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Physical properties of electrodeposited CIGS films on crystalline silicon: Application for photovoltaic heterojunction
摘要： P-type CIGS (CuIn1-xGaxSe2) thin films are electro-deposited on a p-type c-Si substrate with a galvanostatic mode to form CIGS(p)/c-Si(p) hetero-junction. The Ga content is varied up to x = 30%. The physical properties of formed CIGS films are characterized by XRD, SEM, EDS and UV-Visible spectroscopy. With x = 30%, we obtain a single chalcopyrite phase of CIGS with a tetragonal crystal structure, a high crystallinity, an orientation toward the (112) direction and a band gap energy of 1.40 eV. AM1.5 J-V performed on the CuI0.7G0.3Se2/c-Si hetero-junction reveals interesting photovoltaic parameters with an efficiency of 3.75%. In addition, using the energy diagram of the hetero-junction calculated with the Anderson model, we show that it could play a dual role when it is combined to a c-Si cell in a Ag-Al/c-Si(n+)/c-Si(p)/CIGS(p)/Al new architecture. Therefore, in addition to its interesting photovoltaic parameters, this hetero-junction can substitute the BSF.
关键词： Electro-deposition,Hetero-junction,CIGS,Silicon
更新于2025-09-16 10:30:52
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Organic light-emitting diodes with an electro-deposited copper(I) thiocyanate (CuSCN) hole-injection layer based on aqueous electrolyte
摘要： Copper(I) thiocyanate (CuSCN) has been drawing much attention in optoelectronics due to its exceptional optical and electrical properties, as well as its processing versatility. The first organic light-emitting diodes (OLEDs) integrated with electro-deposited CuSCN crystalline thin films based on aqueous electrolyte were fabricated. With precisely tuned deposition parameters, the CuSCN thin films with satisfactory surface roughness and sufficient grain density were realized. We found that the driving voltage (voltage at a current density of 100 mA/cm2) and turn-on voltage of OLEDs using CuSCN as the hole injection layer (HIL) can be reduced by 1.41 and 1.79 V, respectively, compared with devices using vacuum-deposited hole injecting transition metal oxide molybdenum trioxide (MoO3). Moreover, the fabricated OLEDs also demonstrated considerably mitigated efficiency roll-off. Optical and energetic analyses were conducted to investigate the characteristics and enhancement mechanisms. Efficient hole-injection, electron blocking, improved charge balance, enhanced optical properties and good compatibility of electro-deposited CuSCN with thermally evaporated organic systems were found to be the primary contributors for the performance improvements of the OLEDs.
关键词： Electro-deposition,CuSCN,Hole injection,Organic-inorganic hybrid system,Organic light-emitting diodes,Copper(I) thiocyanate
更新于2025-09-11 14:15:04
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[IEEE 2018 International Conference on Advanced Science and Engineering (ICOASE) - Duhok, Kurdistan Region, Iraq (2018.10.9-2018.10.11)] 2018 International Conference on Advanced Science and Engineering (ICOASE) - Characterization of Black Nickel Solar Absorber Coatings on Brass Substrates
摘要： Solar Selective coatings have radiative characteristics which vary with wavelength. They are characterized by their high absorbance (α) in the visible region and low thermal emittance (ε) (or high reflection) beyond the visible region of the sun spectra. These coatings materials are of very great importance in the field of renewable energy sources (solar energy applications). In the present study, the influence of process parameters like the current density, concentration of particles, time of deposition, the thickness of the electrodeposited nickel (Ni), etc. was investigated. The objective of the research is to study solar selective coatings used in solar thermal collectors. i.e. black nickel (B-N) coatings, electrodeposited (ED) over brass substrates. Preparation and characterization of B-N coatings over brass substrates was performed. Low-cost solar selective absorbers (ED of B-N on brass) have been obtained. Trial to get rid of some structures or materials which are harm to the environment. (i.e. car batteries, by using lead sheets from recycled car battery as an anode during ED of B-N coating) was achieved. Reflectance measurements were used to evaluate both, (α) and (ε) of the coatings. The measurements of total or diffuse reflectance of samples were performed with instruments equipped with integrating spheres. Electrodeposited (ED) of black nickel BN on brass substrate has a moderate selectivity (α /ε =2.63, when α =0.95). The durability tests were carried out in the form of elevated temperature exposure in air (250 C0), temperature cycling (30-100 C0), and humidity tests (up to 90 % RH). The coatings have been re-characterized after ageing tests, using spectrophotometry and other techniques, such as X-ray techniques. Durability testing of the ED B-N coatings indicates that they are sensitive to humidity testing. However, efficient absorbers were obtained by using low-cost technique. Durability testing of the ED B-N coatings indicates that they are sensitive to humidity testing.
关键词： Solar selective coating,Black nickel coating,Electro-deposition
更新于2025-09-04 15:30:14