Events Calendar

NEXT 10 EVENTS ON OR AFTER March 31, 2015

[Show all events in March]

Thursday, April 2, 2015

3:00 PM - 4:00 PM

ANSER Center Seminar - Dr. Tanja Cuk of UC Berkeley

Dr. Tanja Cuk, of the Chemistry department at UC Berkeley, will deliver an ANSER seminar on 3/5.

 

Abstract:

Charge dynamics and molecular intermediates of photo-catalytic interfaces


Initiating catalysis by photons that leads to a directed charge flow creates unstable intermediates that can be followed for their ability to break and reorganize bonds of reactant molecules. In our group, we seek to follow the transient steps of a catalytic cycle through time-resolved spectroscopy coupled to solid-state devices that control the flow of charge to the catalyst/reactant
interface. In particular, we investigate the water oxidation reaction at the solid-liquid interface of a photo-electrochemical cell from the perspective of charges leaving the solid side of the interface and the rise and decay of intermediates bound from the liquid side of the interface. We use visible transient reflection/absorption and transient infrared attenuated total reflection to target both actors. We rely on 3d transition metal oxides that lead to stable and efficient water oxidation. A complimentary part of the lab investigates the photo-excited carrier dynamics of 3d transition metal oxides in solid and molecular form. Importantly for catalysis, these experiments seek to identify whether the photo-generated carriers are localized at a transition metal site at the initial time step of the reaction.

Contact Info: Ria Hirsch

Location: Ryan Hall 2190 Campus Drive Ryan 4003 Evanston, IL 60208

ANSER Center Seminar - Dr. Tanja Cuk of UC Berkeley

Dr. Tanja Cuk, of the Chemistry department at UC Berkeley, will deliver an ANSER seminar on 3/5.

 

Abstract:

Charge dynamics and molecular intermediates of photo-catalytic interfaces


Initiating catalysis by photons that leads to a directed charge flow creates unstable intermediates that can be followed for their ability to break and reorganize bonds of reactant molecules. In our group, we seek to follow the transient steps of a catalytic cycle through time-resolved spectroscopy coupled to solid-state devices that control the flow of charge to the catalyst/reactant
interface. In particular, we investigate the water oxidation reaction at the solid-liquid interface of a photo-electrochemical cell from the perspective of charges leaving the solid side of the interface and the rise and decay of intermediates bound from the liquid side of the interface. We use visible transient reflection/absorption and transient infrared attenuated total reflection to target both actors. We rely on 3d transition metal oxides that lead to stable and efficient water oxidation. A complimentary part of the lab investigates the photo-excited carrier dynamics of 3d transition metal oxides in solid and molecular form. Importantly for catalysis, these experiments seek to identify whether the photo-generated carriers are localized at a transition metal site at the initial time step of the reaction.

Thursday, April 16, 2015

5:00 PM - 6:00 PM

ANSER Center Symposium - Keynote Address (Michael Graetzel)

Dr. Michael Graetzel will give the keynote address for ANSER's 8th annual symposium.

 

Seminar information:

Dr. Michael Graetzel

Power from the Sun, Solar Cells that Mimic Photosynthesis

Learning from the concepts used by green plants photosynthesis, we have developed nanostructured systems affording efficient solar light harvesting and conversion to electricity and fuels [1-4]. Solar cells using dyes, semiconductor quantum dots or perovskite pigments as light harvesters have emerged as credible contenders to conventional silicon cells photovoltaic devices. Separating light absorption from charge carrier transport dye sensitized mesoscopic solar cells (DSCs) were the first to use a three-dimensional nanocrystalline junction for solar electricity production [1]. The conversion efficiency for DSC's is currently 13 - 14 % and reached over 20 % for pervoskite pigments [5]. DSCs are simple and relatively inexpensive to manufacture, and they possess unique practical advantages including flexibility and transparency. These features along with excellent long-term stability have fostered first commercial applications, the industrial production of DSC's attaining presently the multi-MW/year scale. Our fundamentally new concepts have also been applied to realize the solar generation of fuels such as hydrogen from water [6] and CO from CO2 as well as the storage of electricity in high power lithium ion batteries.

References
1. B.O'Regan and M.Grätzel Nature 335, 7377 (1991)
2. M. Grätzel, Nature 414, 338 (2001).
3. M. Grätzel, R.A.J. Janssen, D.B. Mitzi, E.H. Sargent Nature 488, 304 (2012).
4. A. Yella, H.-W. Lee, H.N. Tsao, C. Yi. A.K. Chandiran, Md.K. Nazeeruddin, E.W.-G.Diau, C.-Y. Yeh, S.M. Zakeeruddin, M. Grätzel Science 334, 629 (2011).
5. M. Grätzel Nature Materials 13, 839 (2014).
6. J. Luo, J.-H. Im, M.T. Mayer, M. Schreier, Md.K. Nazeeruddin, N.-G. Park, S.D.Tilley, H.J. Fan, M. Grätzel, Science, 345, 1593-1596. (2014).

 

Click here to RSVP!

Contact Info: Ria Hirsch

Location: Pancoe-NSUHS Life Sciences Pavilion 2200 Campus Drive Pancoe Auditorium Evanston, IL 60208

Event URL: http://anser.northwestern.edu/news_events/anser201...

ANSER Center Symposium - Keynote Address (Michael Graetzel)

Dr. Michael Graetzel will give the keynote address for ANSER's 8th annual symposium.

 

Seminar information:

Dr. Michael Graetzel

Power from the Sun, Solar Cells that Mimic Photosynthesis

Learning from the concepts used by green plants photosynthesis, we have developed nanostructured systems affording efficient solar light harvesting and conversion to electricity and fuels [1-4]. Solar cells using dyes, semiconductor quantum dots or perovskite pigments as light harvesters have emerged as credible contenders to conventional silicon cells photovoltaic devices. Separating light absorption from charge carrier transport dye sensitized mesoscopic solar cells (DSCs) were the first to use a three-dimensional nanocrystalline junction for solar electricity production [1]. The conversion efficiency for DSC's is currently 13 - 14 % and reached over 20 % for pervoskite pigments [5]. DSCs are simple and relatively inexpensive to manufacture, and they possess unique practical advantages including flexibility and transparency. These features along with excellent long-term stability have fostered first commercial applications, the industrial production of DSC's attaining presently the multi-MW/year scale. Our fundamentally new concepts have also been applied to realize the solar generation of fuels such as hydrogen from water [6] and CO from CO2 as well as the storage of electricity in high power lithium ion batteries.

References
1. B.O'Regan and M.Grätzel Nature 335, 7377 (1991)
2. M. Grätzel, Nature 414, 338 (2001).
3. M. Grätzel, R.A.J. Janssen, D.B. Mitzi, E.H. Sargent Nature 488, 304 (2012).
4. A. Yella, H.-W. Lee, H.N. Tsao, C. Yi. A.K. Chandiran, Md.K. Nazeeruddin, E.W.-G.Diau, C.-Y. Yeh, S.M. Zakeeruddin, M. Grätzel Science 334, 629 (2011).
5. M. Grätzel Nature Materials 13, 839 (2014).
6. J. Luo, J.-H. Im, M.T. Mayer, M. Schreier, Md.K. Nazeeruddin, N.-G. Park, S.D.Tilley, H.J. Fan, M. Grätzel, Science, 345, 1593-1596. (2014).

 

Click here to RSVP!

Friday, April 17, 2015

ALL DAY

ANSER Center Symposium - Solar Electricity: Perovskite Solar Cells

ANSER Center 8th Annual Symposium

Solar Electricity: Perovskite Solar Cells

• 8:30 – 8:45 // Opening Remarks
• 8:45 - 9:45 // David Mitzi - "Organic-Inorganic Perovskites: An Historical Perspective"
• 10:00 - 11:00 // Prashant Kamat - "Revealing the Intricacies of Perovskite Solar Cells"
• 11:00 - 12:00 // Yang Yang - "Recent Progress on Organic-Inorganic Hybrid Perovskite-Based Solar Cell"
• 1:30 - 2:30 // Alex Jen - "Molecular and Interface Engineering for Achieving Highly Efficient Polymer &; Perovskite Solar Cells"
• 2:30 - 3:15 // R.P.H. Chang - "Recent Progress in Process Development for Fabricating A2MX6 Based Cells"
• 3:15 - 4:00 // Mercouri Kanatzidis - "Hybrid Halide Perovskites: Remarkable Electronic Materials for Chemistry and Energy Conversion"
• 4:00 – 4:15pm // Closing Remarks

 

RSVP here!

Contact Info: Ria Hirsch

Location: McCormick Foundation Center 1870 Campus Drive McCormick Tribune Auditorium Evanston, IL 60208

Event URL: http://anser.northwestern.edu/news_events/anser201...

ANSER Center Symposium - Solar Electricity: Perovskite Solar Cells

ANSER Center 8th Annual Symposium

Solar Electricity: Perovskite Solar Cells

• 8:30 – 8:45 // Opening Remarks
• 8:45 - 9:45 // David Mitzi - "Organic-Inorganic Perovskites: An Historical Perspective"
• 10:00 - 11:00 // Prashant Kamat - "Revealing the Intricacies of Perovskite Solar Cells"
• 11:00 - 12:00 // Yang Yang - "Recent Progress on Organic-Inorganic Hybrid Perovskite-Based Solar Cell"
• 1:30 - 2:30 // Alex Jen - "Molecular and Interface Engineering for Achieving Highly Efficient Polymer &; Perovskite Solar Cells"
• 2:30 - 3:15 // R.P.H. Chang - "Recent Progress in Process Development for Fabricating A2MX6 Based Cells"
• 3:15 - 4:00 // Mercouri Kanatzidis - "Hybrid Halide Perovskites: Remarkable Electronic Materials for Chemistry and Energy Conversion"
• 4:00 – 4:15pm // Closing Remarks

 

RSVP here!

Monday, April 20, 2015

3:00 PM - 4:00 PM

ANSER Center Seminar - Dr. Gordana Dukovic of the University of Colorado Boulder

Dr. Gordana Dukovic, of the University of Colorado Boulder, will deliver a special ANSER seminar on 4/20 from 3-4pm in Ryan 4003.

 

Abstract:

TBD

 

 

Contact Info: Ria Hirsch

Location: Ryan Hall 2190 Campus Drive Ryan 4003 Evanston, IL 60208

ANSER Center Seminar - Dr. Gordana Dukovic of the University of Colorado Boulder

Dr. Gordana Dukovic, of the University of Colorado Boulder, will deliver a special ANSER seminar on 4/20 from 3-4pm in Ryan 4003.

 

Abstract:

TBD

 

 

Thursday, September 3, 2015

2:00 PM - 3:00 PM

ANSER Center Seminar - Dr. Rachel Segalman of UC Santa Barbara

Dr. Rachel Segalman, of the Chemical Engineering Department department at UC Santa Barbara, will deliver an ANSER seminar on 9/3.

 

Abstract:

TBD

Contact Info: Ria Hirsch

Location: Ryan Hall 2190 Campus Drive Ryan 4003 Evanston, IL 60208

ANSER Center Seminar - Dr. Rachel Segalman of UC Santa Barbara

Dr. Rachel Segalman, of the Chemical Engineering Department department at UC Santa Barbara, will deliver an ANSER seminar on 9/3.

 

Abstract:

TBD

Thursday, October 1, 2015

2:00 PM - 3:00 PM

ANSER Center Seminar - Dr. Luis Campos of Columbia University

Dr. Luis Campos, of the Chemistry Department at Columbia University, will deliver an ANSER seminar on 10/1.

 

Abstract:

TBD

Contact Info: Ria Hirsch

Location: Ryan Hall 2190 Campus Drive Ryan 4003 Evanston, IL 60208

ANSER Center Seminar - Dr. Luis Campos of Columbia University

Dr. Luis Campos, of the Chemistry Department at Columbia University, will deliver an ANSER seminar on 10/1.

 

Abstract:

TBD

Thursday, November 5, 2015

2:00 PM - 3:00 PM

ANSER Center Seminar - Dr. Aaron Appel of PNNL

Dr. Aaron Appel, of PNNL, will deliver an ANSER seminar on 11/5.

 

Abstract:

TBD

Contact Info: Ria Hirsch

Location: Ryan Hall 2190 Campus Drive Ryan 4003 Evanston, IL 60208

ANSER Center Seminar - Dr. Aaron Appel of PNNL

Dr. Aaron Appel, of PNNL, will deliver an ANSER seminar on 11/5.

 

Abstract:

TBD

Thursday, December 3, 2015

2:00 PM - 3:00 PM

ANSER Center Seminar - Dr. Yogi Surendranath of MIT

Dr. Yogi Surendranath, of the Chemistry Department at MIT, will deliver an ANSER seminar on 12/3.

 

Abstract:

TBD

Contact Info: Ria Hirsch

Location: Ryan Hall 2190 Campus Drive Ryan 4003 Evanston, IL 60208

ANSER Center Seminar - Dr. Yogi Surendranath of MIT

Dr. Yogi Surendranath, of the Chemistry Department at MIT, will deliver an ANSER seminar on 12/3.

 

Abstract:

TBD

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