Concept

Couche d'ozone

Publications associées (204)

New Horizons for Perovskite Solar Cells Employing DNA-CTMA as the Hole-Transporting Material

We investigate solution-processed low-temperature lead-halide perovskite solar cells employing deoxyribose nucleic acid (DNA)-hexadecyl trimethyl ammonium chloride (CTMA) as the hole-transport layer and (6,6)-phenyl C-61-butyric acid methyl ester (PCBM) as ...

Wiley-V C H Verlag Gmbh2016

A dual-functional asymmetric squaraine-based low band gap hole transporting material for efficient perovskite solar cells

We demonstrate for the first time an asymmetric squaraine-based low band-gap hole transporting material, which acted as both light harvesting and hole transporting layers in methylammonium lead triiodide perovskite solar cells. Opto-electrochemical charact ...

Royal Soc Chemistry2016

A dual-functional asymmetric squaraine-based low band gap hole transporting material for efficient perovskite solar cells

Mohammad Khaja Nazeeruddin, Peng Gao, Sanghyun Paek

2016

Efficient Monolithic Perovskite/Silicon Tandem Solar Cell with Cell Area >1 cm

Christophe Ballif, Arnaud Walter, Stefaan De Wolf, Björn Niesen, Jérémie Werner, Johannes Peter Seif, Luc Fesquet, Ching-Hsun Weng

Monolithic perovskite/crystalline silicon tandem solar cells hold great promise for further performance improvement of well-established silicon photovoltaics; however, monolithic tandem integration is challenging, evidenced by the modest performances and s ...

Amer Chemical Soc2016

Reduce ozone when and where it matters most

Athanasios Nenes

A research team at the Georgia Institute of Technology has developed a new way to help meet air quality standards that might reduce the costs of meeting the new ozone rule. Called APOM (Air Pollution Optimization Model), the method targets high-impact time ...

TradeFair Group Publications, Ltd2015

Combination of UV absorbance and electron donating capacity to assess degradation of micropollutants and formation of bromate during ozonation of wastewater effluents

Urs von Gunten

In this study, the changes in UV absorbance at 254 nm (UVA(254)) and electron donating capacity (EDC) were investigated as surrogate indicators for assessing removal of micropollutants and bromate formation during ozonation of wastewater effluents. To meas ...

Elsevier2015

Evaluation of the persistence of transformation products from ozonation of trace organic compounds - A critical review

Urs von Gunten

Ozonation is an efficient treatment system to reduce the concentration of trace organic compounds (TrOCs) from technical aquatic systems such as drinking water, wastewater and industrial water, etc. Although it is well established that ozonation generally ...

Elsevier2015

Effect of Ozone Treatment on Nano-Sized Silver Sulfide in Wastewater Effluent

Urs von Gunten, Renata Behra

Silver nanoparticles used in consumer products are likely to be released into municipal wastewater. Transformation reactions, most importantly sulfidation, lead to the formation of nanoscale silver sulfide (nano-Ag2S) particles. In wastewater treatment pla ...

American Chemical Society2015

Analysing the effect of crystal size and structure in highly efficient CH3NH3PbI3 perovskite solar cells by spatially resolved photo- and electroluminescence imaging

Michael Graetzel, Jeong-Hyeok Im

CH3NH3PbI3 perovskite solar cells with a mesoporous TiO2 layer and spiro-MeOTAD as a hole transport layer (HTL) with three different CH3NH3I concentrations (0.032 M, 0.044 M and 0.063 M) were investigated. Strong variations in crystal size and morphology r ...

Royal Society of Chemistry2015

Light Harvesting and Charge Recombination in CH3NH3PbI3 Perovskite Solar Cells Studied by Hole Transport Layer Thickness Variation

Michael Graetzel, Mohammad Khaja Nazeeruddin, Shaik Mohammed Zakeeruddin, Wolfgang Richard Tress, Robin Humphry-Baker, Mohammad Ibrahim Dar, Nevena Vaskova Marinova

A tailored optimization of perovskite solar cells requires a detailed understanding of the processes limiting the device efficiency. Here, we study the role of the hole transport layer (HTL) spiro-MeOTAD and its thickness in a mesoscopic TiO2-based solar c ...

American Chemical Society2015

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