Concept

Productive efficiency

Related publications (43)

Phthalocyanines for dye-sensitized solar cells

Phthalocyanines (Pcs) are robust and intensely colored macrocycles (blue pigments) with high chemical, thermal and light stability, properties that are of paramount importance for realistic photovoltaic applications. In particular, Pcs have played a very i ...

2019

Activism, Strategic Trading, and Liquidity

Pierre Collin Dufresne, Tao Li

We analyze dynamic trading by an activist investor who can expend costly effort to affect firm value. We obtain the equilibrium in closed form for a general activism technology, including both binary and continuous outcomes. Variation in parameters can pro ...

2018

Coming Full Circle Why Social and Institutional Dimensions Matter for the Circular Economy

Vincent Moreau, François Richard Vuille

In light of the environmental consequences of linear production and consumption processes, the circular economy (CE) is gaining momentum as a concept and practice, promoting closed material cycles by focusing on multiple strategies from material recycling ...

Massachusetts Institute of Technology Press2017

Game theoretic analysis of electricity market auction mechanisms

Maryam Kamgarpour, Orcun Karaca

We consider two prominent mechanisms for the electricity market; the pay-as-bid mechanism, currently applied in certain control reserve markets, and the proposed Vickrey- Clarke-Groves mechanism, an established auction mechanism used in advertising and spe ...

IEEE2017

Development of high efficiency 100% aqueous cobalt electrolyte dye-sensitised solar cells

In this study we report the application of three cobalt redox shuttles in 100% aqueous electrolyte dyesensitised solar cells (DSCs). By using chloride as a counter-ion for cobalt bipyridine, cobalt phenanthroline and cobalt bipyridine pyrazole, the redox s ...

Royal Soc Chemistry2016

Carbon nanotube-based hybrid hole-transporting material and selective contact for high efficiency perovskite solar cells

Michael Graetzel, Ulf Anders Hagfeldt, Antonio Abate, Juan-Pablo Correa-Baena

We demonstrate a high efficiency perovskite solar cell with a hybrid hole-transporting material-counter electrode based on a thin single-walled carbon nanotube (SWCNT) film and a drop-cast 2,2,7,-7-tetrakis(N, N-di-p-methoxyphenylamine)-9,90-spirobifluoren ...

Royal Soc Chemistry2016

A mixed standard/custom design strategy to minimize cost and maximize efficiency for picohydro power potential harvesting

François Avellan, Elena Vagnoni, Cécile Münch-Alligné, Loïc Andolfatto

Harvesting the numerous small scale hydroelectric potential is a way to increase the sustainable hydraulic energy production in developed countries. The condition to meet economical profitability with pico power stations - below 25 kW - is to minimize the ...

2015

Cell OEE: Extract the OEE killing combinations

The Overall Equipment Effectiveness (OEE) is a measure of a production system efficiency. OEE combines the Availability, Performance and Quality to an appreciated metric to qualify production systems. The Mikron assembly lines are constituted of multiple s ...

2015

High efficiency stable inverted perovskite solar cells without current hysteresis

Michael Graetzel, Mohammad Khaja Nazeeruddin, Ulf Anders Hagfeldt

The inverted perovskite solar cell fabricated using a two-step method exhibited the highest FF of 0.85 and good efficiency of 18% based on CH3NH3PbI3. A small amount of H2O was added into PbI2/DMF to make a homogenous precursor solution. A high quality PbI ...

Royal Soc Chemistry2015

Towards the reduction of environmental impacts of temporary event infrastructures

Loïc Vivien Fumeaux

In the context of temporary events, the use of structural systems suitable for short-term use, is a key strategy in terms of organization. However, this type of infrastructure currently requires the implementation of significant resources, for which the ch ...

2014

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