Natalie Renuka Banerji

Cette personne n’est plus à l’EPFL

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Publications associées (20)

Using the Stark effect to understand charge generation in organic solar cells

Jacques-Edouard Moser, Natalie Renuka Banerji, Jelissa Risse, Natalie Stingelin

We have used a femtosecond-resolved spectroscopic technique based on the Stark effect (electromodulated differential absorption) in order to investigate free charge generation and charge drift in solar cell devices of neat conjugated polymer pBTTT and in i ...

Spie-Int Soc Optical Engineering2015

Charge generation in organic solar cell materials studied by terahertz spectroscopy

Natalie Renuka Banerji, Jan Cornelius Brauer, Mariateresa Scarongella

We have investigated the photophysics in neat films of conjugated polymer PBDTTPD and its blend with PCBM using terahertz time-domain spectroscopy. This material has very high efficiency when used in organic solar cells. We were able to identify a THz sign ...

Spie-Int Soc Optical Engineering2015

A Close Look at Charge Generation in Polymer:Fullerene Blends with Microstructure Control

Jacques-Edouard Moser, Natalie Renuka Banerji, Mariateresa Scarongella, Jelissa Risse, Natalie Stingelin

We reveal some of the key mechanisms during charge generation in polymer:fullerene blends exploiting our well-defined understanding of the microstructures obtained in pBTTT:PCBM systems via processing with fatty acid methyl ester additives. Based on ultraf ...

Amer Chemical Soc2015

Charge Separation Pathways in a Highly Efficient Polymer:Fullerene Solar Cell Material

Natalie Renuka Banerji, Arun Aby Paraecattil

PBDTTPD is one of the best conjugated polymers for solar cell applications (up to 8.5% efficiency). We have investigated the dynamics of charge generation in the blend with fullerene (PCBM) and addressed highly relevant topics such as the role of bulk hete ...

Amer Chemical Soc2014

The influence of microstructure on charge separation dynamics in organic bulk heterojunction materials for solar cell applications

Jacques-Edouard Moser, Natalie Renuka Banerji, Arun Aby Paraecattil, Mariateresa Scarongella, Natalie Stingelin

Light-induced charge formation is essential for the generation of photocurrent in organic solar cells. In order to gain a better understanding of this complex process, we have investigated the femtosecond dynamics of charge separation upon selective excita ...

Royal Society of Chemistry2014

Sub-picosecond delocalization in the excited state of conjugated homopolymers and donor–acceptor copolymers

Natalie Renuka Banerji

In this feature article, we review and examine evidence that the primary photoexcited species in conjugated polymers is considerably delocalized. Localization occurs via a series of complex relaxation mechanisms on the

Royal Society of Chemistry2013

Charge transfer relaxation in donor–acceptor type conjugated materials

Ursula Röthlisberger, Natalie Renuka Banerji, Mariateresa Scarongella, Andrey Laktionov

The development of conjugated materials bearing electron-rich and electron-poor units along their backbone introduces new possibilities to control functionality for organic electronic applications through charge transfer character in ground and excited sta ...

Royal Society of Chemistry2013

Sensitization of fullerenes by covalent attachment of a diketopyrrolopyrrole chromophore

Jacques-Edouard Moser, Natalie Renuka Banerji

In an effort to develop new materials for organic solar cell applications, we have synthesized triads of 3,6-dithien-2-yl-2,5-dialkylpyrrolo[3,4-c]pyrrole-1,4-dione (DTDPP) covalently linked at the nitrogen positions to two [6,6]-phenyl-C61-butyric acid es ...

Royal Society of Chemistry2012

Intensity Dependent Femtosecond Dynamics in a PBDTTPD-Based Solar Cell Material

Jacques-Edouard Moser, Natalie Renuka Banerji, Arun Aby Paraecattil

PBDTTPD is a conjugated polymer with high power conversion efficiency if used in organic solar cells together with fullerene derivatives. We have investigated forthe first time the excited state dynamics of pristine PBDTTPD thin film as well as the ultrafa ...

Amer Chemical Soc2012

Dynamics and mechanisms of interfacial photoinduced electron transfer processes of third generation photovoltaics and photocatalysis

Jacques-Edouard Moser, Arianna Marchioro, Christophe Bauer, Natalie Renuka Banerji, Joël Teuscher, Jan Cornelius Brauer, Mateusz Barnaba Wielopolski, Elham Ghadiri, Jelissa Risse, Angela Punzi

Photoinduced electron transfer (PET) across molecular/bulk interfaces has gained attention only recently and is still poorly understood. These interfaces offer an excellent case study, pertinent to a variety of photovoltaic systems, photo- and electrochemi ...

2011

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