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Silicon Filaments in Silicon Oxide for Next-Generation Photovoltaics

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Ultrafast photoinduced energy and charge transfer

Majed Chergui

After presenting the basic theoretical models of excitation energy transfer and charge transfer, I describe some of the novel experimental methods used to probe them. Finally, I discuss recent results concerning ultrafast energy and charge transfer in biol ...

2019

Fundamentals of perovskite formation for photovoltaics

Amita Ummadisingu

Perovskite solar cells have become strong contenders in the arena of photovoltaics due to the stunning rise in their efficiency from 3 % to over 20 % in just seven years. In this time, numerous device architectures and thin film deposition methods have bee ...

EPFL2018

Polymer-based optoelectronic interface and methods for its manufacture

Diego Ghezzi, Marta Jole Ildelfonsa Airaghi Leccardi, Laura Ferlauto

A polymer-based optoelectronic interface comprises an elastomeric substrate (10) and a plurality of discrete photovoltaic pixel elements (20) disposed on top of the substrate. Each pixel element comprises at least one active layer comprising a semiconducti ...

2018

Characterization techniques for dye-sensitized solar cells

Ulf Anders Hagfeldt

Dye-sensitized solar cells (DSCs) have been widely studied in the last two decades and start to be commercialized in the photovoltaic market. Comprehensive characterization is needed to fully understand and optimize the device performance and stability. In ...

Royal Soc Chemistry2017

Isomerism effect on the photovoltaic properties of benzotrithiophene-based hole-transporting materials

Mohammad Khaja Nazeeruddin, Iwan Zimmermann, Inés Garcia Benito

Engineering of inorg.-org. lead halide perovskites for photovoltaic applications has experienced significant advances in recent years. However, the use of the relatively expensive spiro-OMeTAD as a hole-transporting material (HTM) poses a challenge due ...

2017

Pyridyl- and Picolinic Acid Substituted Zinc(II) Phthalocyanines for Dye-Sensitized Solar Cells

Mohammad Khaja Nazeeruddin, Jun Ho Yum, Aravind Kumar Chandiran

A series of tri-tert-butyl zinc(II) phthalocyanines (Pcs) substituted with pyridyl, carboxyl, or picolinic acid anchoring groups on the periphery were prepared. Photovoltaic (PV) studies on these dyes were carried out revealing some interesting features. I ...

Wiley-VCH Verlag2017

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Hybrid organic-inorganic perovskite solar cells are a topic of increasing interest, as in a short time span they are able to lead in the third generation photovoltaics. Organohalide perovskites possess exceptional optoelectronic and physical properties, th ...

Royal Soc Chemistry2016

Effect of molecular weight in diketopyrrolopyrrole-based polymers in transistor and photovoltaic applications

Kevin Sivula, Xavier Adrian Jeanbourquin, Andrea Gasperini

Uncovering the precise effect of the conjugated polymer chain length on the semiconducting properties in thin-film devices is confounded by the step-growth polymerization techniques typically used. Here, we use preparatory size exclusion chromatography to ...

Wiley-Blackwell2016

Phthalocyanines (Pcs) are used as sensitizers in dye-sensitized solar cells (DSSCs) because of their stability and intense absorption in the red and near-IR regions. Impressive progress has been made in photovoltaic efficiencies by introduction of bulky pe ...

Wiley-V C H Verlag Gmbh2016

In this article is presented the preliminary evaluation of the performance of radiation transmission of glass block, used in support of photovoltaic cells, investigating different internal surface points of the block, which are subject to different shading ...

IEEE2015