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In this paper, we investigated the assembly characterization for reliability test. The structure of a glass interposer with two RDL on the front-side and one RDL on the backside had been evaluated and developed. Key technologies, including via fabrication, topside RDL formation, micro-bumping, temporary bonding, glass thinning and backside RDL formation, were developed and integrated to perform well...
Tailored femtosecond laser pulses can enhance the performance for materials processing. Temporarily tailored femtosecond laser pulses are employed for high efficiency glass welding, while the spatially one, for formation of taper-free through Si vias.
Conductivities of Si thin films crystallized in solid phase with/without YSZ layers by the two-step method with pulsed laser were investigated. The temperature dependences were also measured for both undoped and P-doped films using AC Hall effect measurement. It was found that the Si/YSZ/glass structure exhibited higher conductivities than those of the Si/glass. This suggested that the Si film crystallized...
In this paper, we propose a novel subspace learning algorithm, termed as null space based discriminant sparse representation large margin (NDSLM). There are two contributions in the paper. First, we propose a new expectation to obtain the neighborhood information for large margin subspace learning, i.e., the within-neighborhood scatter and betweenneighborhood scatter are modeled by the sparse reconstruction...
In the seek of getting better sensibility, selectivity, times of response and recovery, interdigital electrode structures have been increasingly used in nano and microelectronic devices designed to the gas sensing, in the last decades, given their importance and performance characteristics presented for each new usage. In this sense, this work not only addresses on a review of performed researches...
This paper presents the structure design, working principles and heat transformation of the on-chip temperature-control for dual-mass micro-gyroscope. The dedicated temperature sensor and heater provide real-time monitored and controlled working environment for the micro-gyroscope, thermal stabilization is thus achieved by maintaining the gyroscope temperature larger than the highest temperature of...
We report on the fabrication and characterization of both flat and patterned c-Si solar cells on glass. We use epitaxial layers grown by plasma enhanced chemical vapor deposition at low temperature (T<200°C), and anodic bonding on glass substrate. Inverted nanopyramids are fabricated by nanoimprint lithography and wet etching in alkaline solution. With 3µm-thick c-Si layers, the performances achieved...
The brightness, large absorption cross-section and flexibility of colloidal nanocrystal quantum-dots (QDs) make these materials promising candidates for light harvesting applications. The difficulty of efficiently extracting photogenerated carriers from the QDs however drastically limits the power conversion efficiency of NQD solar cells. A possible way to circumvent these issues is to engineer hybrid...
Recent changes to the flammability test set in UL 1703 have raised the opportunity for using glass - backsheet c-Si modules on rooftop installations. For this module type, passing the Spread of Flame test can be problematic. This paper describes work undertaken to identify the progression of degradation in the module during the course of the test, and to understand which variables in module design...
Glass interposer is introduced as an alternative to silicon interposer for 3D integration due to the attractive advantages such as excellent electrical isolation, extremely low insertion loss, adjustable coefficient of thermal expansion (CTE), and most importantly low cost potential with the capability of large panel size fabrication. In this study, a novel scheme is proposed to fabricate glass interposer...
The pressure sensor is a key device in many mechatronic systems for automotive and industrial applications. We represent the piezoresitive pressure sensor based on the single crystal silicon strain gauges, which are glass-fused to the stainless steel diaphragm at high temperature. The silicon bulkmicromachined strain gauges have the through holes and the closed structure, unlike the current competitive...
Significant progress in surface passivation of phosphorus diffused n+ silicon surfaces is reported in this work using standard industrial inline plasma-enhanced chemical vapor deposited (PECVD) silicon nitride (SiNx) films deposited on ultrathin (∼0.6 nm) chemically grown silicon oxide (SiOx). Record low emitter saturation current density (J0e) values of 10 and 22 fA/cm2 are reported for 170-Ω/sq...
Producers of solar photovoltaic panels have become responsible for the recycling of the modules they sell in EU Member States if they follow the publication of the latest revision of the EU waste legislation (WEEE). Beside this we have a few other reasons for the recycling of all used materials in general. By using a combination of physical and chemical technologies it is possible to follow the “zero...
A nanoimprint based approach to achieve efficient light management for solar cells on low temperature transparent polymer (PET) films is presented. The imprint-textured PET substrates show excellent light scattering properties and lead to significantly improved incoupling and trapping of the light in the solar cell, resulting in a current density of 12.9 mA/cm2, similar to that on a glass substrate...
Meyer Burger develops a high-efficiency line concept with a silicon heterojunction (HJT) cell based module. This line produces 2400 6-inch busbarless cells per hour and includes cells and modules characterization. The underlying high-efficiency bifacial module technology relies on the Smart Wire Connection Technology (SWCT) and on a Glass-Glass (GG) module design. The SWCT and GG concepts have been...
PV module characterization by non-contact electrostatic potential measurement method is investigated. The method can be carried out by a portable equipment under various outdoor operating conditions as well as in laboratories. The electric potential of the cells in various crystalline silicon and thin film PV modules can be determined in a noncontact configuration such as through their cover glass...
Liquid phase crystallization (LPC) has proven to be a suitable method to grow large-grained silicon films on commercially well available glass substrates. Zone-melting crystallization with high energy density line sources such as lasers or electron beams enabled polycrystalline grain growth with wafer equivalent morphology. A lot of effort was put into interlayer optimization by different groups....
CSEM in its photovoltaic activity has developed white solar modules with conversion efficiencies above 10%. This innovative PV technology is particularly attractive to be used in building industry where PV elements can blend into building skin and become virtually hidden energy sources. The new Swiss company called Solaxess is now working on the industrialization of this new technology and the first...
Amorphous silicon/crystalline silicon heterojunction solar cells have high open-circuit voltages (Voc) due to excellent passivation on n-type wafer surfaces by thin intrinsic amorphous silicon layers. In this paper, we focus on development of high efficiency rear-emitter heterojunction solar cells using n-type silicon wafers, mainly in three aspects: 1) intrinsic amorphous silicon layer optimization...
The purpose of this study is to understand the relationship between the precursor layer deposited by CuGa-NaF sputtering target and selenidization process. The addition of Na was carried out by using the CuGa-NaF sputtering target. In the CuGa-NaF precursor film, the presence of Na-Ga-F compound was observed. The desorption of fluoride gas from the Na-Ga-F compound occurred, and it accompanied the...
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