A5076732652- Perovskite Materials and Applications
- Vehicle emissions and performance
- Engineering Applied Research
- Conducting polymers and applications
- Advanced Combustion Engine Technologies
- Biodiesel Production and Applications
- Solid-state spectroscopy and crystallography
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Control Systems and Identification
- Advanced Adaptive Filtering Techniques
- Structural Health Monitoring Techniques
- Thermal Expansion and Ionic Conductivity
- Advanced battery technologies research
- Marine and Coastal Research
- Forensic Fingerprint Detection Methods
- Organic and Molecular Conductors Research
- Advanced Battery Materials and Technologies
- Catalytic Processes in Materials Science
- Advancements in Solid Oxide Fuel Cells
- Maritime Transport Emissions and Efficiency
- Internet of Things and Social Network Interactions
- Industrial Technology and Control Systems
- Transition Metal Oxide Nanomaterials
- Catalysis and Oxidation Reactions
École Polytechnique Fédérale de Lausanne
2022-2024
University of Stuttgart
2023-2024
Fraunhofer Institute for Solar Energy Systems
2020-2024
Fraunhofer Society
2022
University of Freiburg
2020-2022
Kunsan National University
2012
This work summarizes recent progress of low-temperature carbon-based electrodes in perovskite photovoltaic devices and their great up-scalability potential.
Abstract Interface engineering and passivating contacts are key enablers to reach the highest efficiencies in photovoltaic devices. While printed carbon–graphite back electrodes for hole‐transporting material (HTM)‐free perovskite solar cells (PSCs) appealing fast commercialization of PSCs due low processing costs extraordinary stability, this device architecture so far suffers from severe performance losses at electrode interface. Herein, a 2D passivation layer as an electron blocking (EBL)...
This review provides fundamental knowledge and development directions towards the commercialising of advantageous all-perovskite tandem solar cells.
The most efficient and stable perovskite solar cells (PSCs) are made from a complex mixture of precursors. Typically, to then form thin film, an extreme oversaturation the precursor is initiated trigger nucleation sites, e.g., by vacuum, airstream, or so-called antisolvent. Unfortunately, triggers do not expel lingering (and highly coordinating) dimethyl sulfoxide (DMSO), which used as solvent, films; this detrimentally affects long-term stability. In work, (the green) sulfide (DMS)...
While perovskite photovoltaic (PV) devices are on the verge of commercialization, promising methods to recycle or remanufacture fully encapsulated solar cells (PSCs) and modules still missing. Through a detailed life-cycle assessment shown in this work, we identify that majority greenhouse gas emissions can be reduced by re-using glass substrate parts PV cells. Based these analytical findings, develop novel thermally assisted mechanochemical approach remove encapsulants, electrode, absorber,...
Compositional engineering of organic-inorganic metal halide perovskite allows for improved optoelectrical properties, however, phase segregation occurs during crystal nucleation and limits solar cell device performance. Herein, we show that by applying tetrabutylammonium bistriflimide as an additive in the precursor solution, ultra-uniform crystals are obtained, which effectively increases As a result, power conversion efficiencies (PCEs) 24.5% 21.2% module achieved, together with high...
Metal‐halide perovskites are optoelectronic materials applied to solar cells as a light absorber due their excellent properties. The power conversion efficiency of perovskite (PSCs) reaches 25.7% certified, which stands in comparison with Si cells. Importantly, compositional engineering has been one the keys breakthrough. However, presence defects within is matter importance it can cause nonradiative recombination charge carriers. In addition, defect migration degrade photovoltaic...
In a stable external environment, slow crystallization rate fosters lattice of pure “black”-phase perovskite, while post treatment at the grain boundaries enhance overall stability, contributing to long-term stability.
Diesel engines have high thermal efficiency, and they less CO & HC emissions than another engines. while NOx Soot are very much, compared with exhaust emission standards. However, the limit level is more strengthened yearly due to importance of environmental protection. So, optimal countermeasures for reduction below required.BR Therefore, author has investigated effects emulsified fuel on characteristics emissions, using an four-cycle, four-cylinder direct injection diesel engine because...
Recently, we have a lot of interest in alternative fuels to provide energy independence from oil producing country and reduce exhaust emissions for air pollution prevention.BR Biodiesel, which can be generated natural renewable sources such as new or used vegetable oils animal fats, may fuel diesel engine compression ignition engine.BR In this paper, the test results on specific consumption neat biodiesel blends(10 vol.% 20 biodiesel) were presented using four stroke, direct injection...
초록·키워드 목차 오류제보하기 디젤기관에 있어서 PM과 NO의 동시저감을 위한 에멀전연료의 적용은 급속도로 발전되어져왔다. 하지만, C중유 에멀젼연료의 연소계측ㆍ해석은 다른 연료에 비하여 복잡한 연소형태 때문에 어려움이 많다. 본 연구에서는 높은 압력과 온도의 정적연소실에서 에멀젼 C중유를 분사ㆍ연소시켜, 연소해석에 대한 실질적인 근거를 제시한다. #정적연소 #에멀젼연료 #PM #NOX #Constant volume combustion #Emulsified C-heavy oil 요약Abstract1. 서론2. 실험장치 및 실험방법3. 실험결과 고찰4. 결론감사의 글참고문헌저자소개
Recently we have a growing interest in environmental pollution and alternative energy. Diesel engine is generally used to produce the power on ground sea. However, combustion characteristics are changed account of wear fuel system altered ambient condition chamber by increment operation hour. Therefore injection timing experimentally investigated find out optimum case aged diesel using biodiesel blend oil. Cylinder pressure, rate pressure rise, heat release gas temperature risen advancing...
요즈음 환경오염 문제와 대체에너지 문제에 관심이 증대되고 있다. 디젤기관은 일반적으로 육상과 해상에서 동력을 생산하는데 사용되고 있는데, 디젤기관의 연소특성과 배기배출물 특성은 기관의 운전시간이 증가함에 따라 연료계통의 마모와 연소실 주위상태의 변화로 달라진다. 본 논문은 약 20여년 사용한 디젤기관에 바이오디젤혼합유를 사용할 경우, 특성에 미치는 연료분사시기의 영향을 고찰하기 위하여 실험적으로 연구하였다. 실험기관의 원래 연료분사시기는 BTDC 22° CA이었는데, 운전한 후에 연료소비율과 대하여 최적의 연료분사시기를 분석한 결과, 26° CA로 변경되었음을 알았다.
본 연구에서는 건조 후 20여년 운항한 군산대학교 실습선 해림호의 발전기를 대상으로 직접 선박현장에서 실험하여 최적 연료 분사시기를 규명해서 선박의 경제적이고 친환경적인 운항에 도움을 주고자 연구하였다. 실험은 기관회전속도 1,200 rpm으로 일정히 유지하고, 기관부하를 0 kW에서 90 kW까지 30 kW간격으로 변화시켰으며, 연료분사시기는 BTDC <TEX>$19^{\circ}$</TEX>에서 <TEX>$23^{\circ}$</TEX>까지 <TEX>$2^{\circ}$</TEX> 간격으로 변화시키면서 실험하였다. 실험결과 연료분사시기를 <TEX>$21^{\circ}$</TEX>에서 <TEX>$23^{\circ}$</TEX>로 앞당길 경우, 연료소비율은 1.37 % 감소하였고, 질소산화물은 11.59 증가하였으며, 매연은 23.5 아황산가스는 2.8 감소하였다. 따라서 노후 발전기 엔진에 있어서 연료분사시기가 연소특성 및 배기배출물특성에 미치는 영향을 종합적으로 분석...
Stabilization error of target aiming systems mounted on moving vehicles is an important performance because the directly affects hit Probability. In a heavy load targetaiming system, disturbance torque comes from mass unbalance and linear acceleration main source stabilization error. This study suggests experimental design method feedforward compensation control to improve systems. The filtered_x least square(FxLMS) algorithm used estimate compensator coefficients adaptively. proposed...
Under Kyoto protocol, 37 countries ("Annex I countries") commit themselves to reduce four greenhouse gases (GHG) (Carbon dioxide, Methane, Nitrous oxide, Sulphur Hexafluoride) and two groups of (Hydrofluorocarbons Perfluorocarbons) produced by them. oxide (N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O) is one the main GHG has strong global warming effect. Assuming 120-year period, it 310 times more impact per unit weight than...
Abstract While perovskite photovoltaic (PV) devices are on the verge of their commercialization, promising methods to recycle or remanufacture fully-encapsulated solar cells (PSCs) and modules still missing. Through detailed life-cycle assessment shown in this work, we identify that majority greenhouse gas emissions can be reduced by re-using glass substrate parts PV cells. Based these analytical findings, develop a novel thermally-assisted mechanochemical approach remove encapsulants,...
EGR is applied in order to lower temperature of combustion chamber by using the specific heat carbon dioxide engine exhaust gas. However, problem system diesel high PM concentration. Combined can be reduced it mixing gas into intake air engine. This experimental study was designed for both engines use. The results and are as follows.BR 1) pressure rate release decreased.BR 2) fuel consumption increased. But, up middle load, little increased.BR 3) NO concentration has decreased 50% almost all...