25 research outputs found
Usinas hidrelétricas reversÃveis subterrâneas utilizando obras abandonadas (minas subterrâneas ou a céu aberto) e o impacto no fluxo das águas subterrâneas
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Chemical crystallographic investigation on Cu2S-In2S3-Ga2S3 ternary system
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Iterative method for optical modelling of perovskite-based tandem solar cells
No full textInternational audienceWe present an iterative method to model the optical properties of a complete semitransparent perovskite solar cell. It is based on spectroscopic characterizations and accounts for porosity and incoherence effects. We provide the complex refractive indices of each layer, and we identify the main sources of optical losses. The optical model is also coupled to an electrical model of 4T perovskite/silicon tandem solar cells. It allows to evaluate the interplay between the optical and electrical losses, and the balance between the efficiency of the top and bottom cells. These models provide an effective way to design future tandem devices
Determination of the electronic properties of Cu2ZnSnSe4-based solar cells by impedance spectroscopy and current–voltage characteristics analysis
No full textEffects of long-term elevated atmospheric carbon dioxide onLolium perenne andTrifolium repens, using a simple photosynthesis model
No full textAlnion forests in Lower Saxony (FRG), their ecological requirements, classification and position within Carici elongatae-Alnetum of Northern Central Europe
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