O Futuro é Orgânico? O Papel dos Polímeros Condutores no Desenvolvimento de Materiais Solares Fotovoltaicos Palmira F. Silva Centro de Química Estrutural.

Slides:

Advertisements

Similar presentations

Jason D. Myers, Sang-Hyun Eom, Vincent Cassidy, and Jiangeng Xue

Advertisements

Making Solar Cells D. Venkataraman (DV) Department of Chemistry Umass Amherst June 29, 2010.

Rare-earth doped fluorides for silicon solar cell efficiency enhancement Diana Serrano Garcia A.Braud, P.Camy, J-L.Doualan, A.Benayad, V.Menard, R.Moncorge.

Nanostructured self-assembled P3HT thin films and their application to enhance organic solar cell efficiency Varun Vohra 1,Hideyuki Murata 2 1 University.

P3HT:PCBM Possible way to home-use solar cell “foliage” Ge, Weihao.

Juan Bisquert Nanostructured Energy Devices: Equilibrium Concepts and Kinetics CRC Press 1 1Introduction 2Electrostatic and thermodynamic potentials of.

Graphene & Nanowires: Applications Kevin Babb & Petar Petrov Physics 141A Presentation March 5, 2013.

Nano organic solar cells Nagwa I. Ibrahim Zulfi College of education Majmaah University Abstract Organic solar cells are usually manufactured from conjugated.

Influence of Acceptor Structure on Barriers to Charge Separation in Organic Photovoltaic Materials Ryan D. Pensack†, Changhe Guo‡, Kiarash Vakhshouri‡,

Solar Power Program Clara Paola Murcia S. BS in Electrical Engineering (Universidad de Los Andes) Concentration in Power Systems / Minor in BA Semiconductor.

Report Speaker: C.A. Chen Teacher: G.S Liou Class: Special Topics on Polymers Synthesis.

Utilizing Carbon Nanotubes to Improve Efficiency of Organic Solar Cells ENMA 490 Spring 2006.

Coupled optoelectronic simulation of organic bulk-heterojunction solar cells: Parameter extraction and sensitivity analysis R. Häusermann,1,a E. Knapp,1.

REVIEW: “AIR-STABLE ALL-INORGANIC NANOCRYSTAL SOLAR CELLS PROCESSED FROM SOLUTION” I. GUR, N. FROMER, M. GEIER, A.P. ALIVISATOS. SCIENCE, OCT EE.

| 1 Plastic solar cells M. A. Loi Zernike Institute for Advanced Materials University of Groningen, The Netherlands

1 Air Force Research Laboratory Dr. Michael F. Durstock, , Device Architectures.. Aluminum ITO Glass V Electron.

Increasing life span of polymer solar cell. Nagilthes Muthu Chem 4101 Fall 2011.

Department of Aeronautics and Astronautics NCKU Nano and MEMS Technology LAB. 1 Chapter I Introduction June 20, 2015June 20, 2015June 20, 2015.

A-Si:H application to Solar Cells Jonathon Mitchell Semiconductors and Solar Cells.

Technology Trends of Organic Devices

Fei Yu and Vikram Kuppa School of Energy, Environmental, Biological and Medical Engineering College of Engineering and Applied Science University of Cincinnati.

Organic Semiconductors: Electronic Properties and Optoelectronic Applications Hsiang-Han Tseng.

Solar Cells Outline. Single-Junction Solar Cells. Multi-Junction Solar Cells.

Size Control Over Semiconducting Materials for Organic Electronics Collen Leng 1, Jeffrey M. Mativetsky 1, John E. Anthony 2, Yueh-Lin Loo 1 1.Chemical.

C ARBON N ANOTUBE B ASED O RGANIC S OLAR C ELLS Arun Tej M. PhD Student EE Dept. and SCDT.

Characterization of organic bulk heterojunction and silicon nanowire solar cells Katherine Song Department of Electrical Engineering, Princeton University,

© Imperial College London 1 Photovoltaics: Research at Imperial College Jenny Nelson Department of Physics Imperial College London Grantham Climate Change.

Vikrant Sista Roll No: EE10S012 IR and UV solar cells for windows and energy scavenging applications.

Nathan Duderstadt, Chemical Engineering, University of Cincinnati Stoney Sutton, Electrical Engineering, University of Cincinnati Kate Yoshino, Engineering.

Şükran GÜR Yelda ÇİFLİK.  Organic photovoltaic cells convert solar into electric energy is probably the most interesting research challenge nowadays.

Institute of Materials Research and Engineering 3 Research Link, Singapore Website: Tel:

THE OPTIMUM PERFORMANCE OF POLYMER SOLAR CELLS By, N. Ibrahim2 M. O. Sid-Ahmed1 1 Sudan University of Science and Technology, Faculty of Science, Physics.

Alternative Energy Sources Organic Photovoltaic (OPV) Timothy McLeod Summer 2006.

Ch.4: Polymer Solar Cells: Photoinduced Charge Transfer ▪ Photoinduced Electron Transfer between Conjugated Polymer and Fullerene N. S. Sariciftci & A.

CEAS REU Project 4 Synthesis of Solar Cell Materials, and Fabrication of Novel Polymer-Based Solar Cells Nathan Duderstadt, Chemical Engineering, University.

Interplay of polarization fields and Auger recombination in the efficiency droop of nitride light-emitting diodes APPLIED PHYSICS LETTERS 101, (2012)

What’s the big deal? CO2 levels are at 400 parts per million (ppm) in the atmosphere –

NEEP 541 Ionization in Semiconductors - II Fall 2002 Jake Blanchard.

Fullerene Derivatives Kirsten Parratt, Loo Lab, 11/9/2010

Lecture 5 Intermolecular electronic energy transfer

Solar Photovoltaic Technologies & Operation Chris Lombardo CHE 384 November 20, 2006.

Mapping Orientational Order in a Bulk Heterojunction Solar Cell with Polarization-Dependent Photoconductive Atomic Force Microscopy Alan J. Heeger, University.

(M): No Class (Memorial Day) 5.27 (W): Energy and Nanotechnology 5.28 (Th): LAB: Solar Cell (M): Project Presentations 6.03 (W): LAB: Antimicrobial.

U C L A Polymer Solar Cells A cost effective renewable energy solution for future – Earth abundant, non-toxic & manufacturing friendly – Light weight power.

Fabrication and characterisation of high efficiency carbon nanotube based organic solar cells Lesias M Kotane NECSA-Wits workshop on Radiation, Material.

References Toward cost-effective solar energy use Science, v 315, n 5813, 9 Feb. 2007, p Nanostructures for photovoltaics Materials Science and.

Electric Force Microscopy (EFM)

The goal of the project is to understand interactions between donor (D) and acceptor (A) small molecules in bulk heterojunctions, which determine their.

 “ dark –axis” 10g/l ob-H 2 Pc Pen Writing A P Au (Electrode) CuPc (Electron Donor) PTCDA (Electron Acceptor) ZnO (Hole Blocking Layer) ITO (Transparent.

Eletrophosphorescence from Organic Materials Excitons generated by charge recombination in organic LEDs Spin statistics says the ratio of singlet : triplet,

HUI LIU, JINJUN LIU, Department of Chemistry, HEMANT M. SHAH and BRUCE W. ALPHENAAR, Department of Electrical & Computer Engineering, University of Louisville.

Presented by:- Nayanee Singh B.Tech(E.C.), 5 th sem Roll no: Banasthali University Rajasthan.

Photonic structuring and transport for bulk heterojuction polymer solar cells Rene Lopez Department of Physics and Astronomy University of North Carolina.

MULTIFUNCTIONAL FIBER SOLAR CELLS USING TIO 2 NANOTUBES, PbS QUANTUM DOTS, AND POLY(3-HEXYLTHIOPHENE) by Dibya Phuyal MS Electrical Engineering EE 230.

A bottom-up rationale for OPV architecture Fabrication Performance Challenges Research opportunities Research Methods in PV: Organic photovoltaic devices.

Chain conformation, aggregation, and miscibility in polymer/fullerene blends for photovoltaics UChicago-Argonne National Laboratory Strategic Collaborative.

Materials Science and Engineering

INFRARED PLASTIC SOLAR CELL

Ultrafast Transient Absorption Spectroscopy Investigation of Photoinduced Dynamics in Poly(3-hexylthiophene)-block-oligo(anthracene-9,10-diyl) (Oligo-ANT-b-P3HT)

Organic Solar Cells: The Technology and the Future

Utilizing Carbon Nanotubes to Improve Efficiency of Organic Solar Cells ENMA 490 Spring 2006.

Computer Simulations of Polymers For Materials and Energy Applications

Charge Transfer and Charge Transport in Nanofibers of

Exciton Fission in Solid Tetracene and Related Materials: a Possible Strategy for High Efficiency Organic Solar Cells Increasing the yield of charge carriers.

Review of semiconductor physics

Side Chains with Incompatible Packing: A Strategy to Assemble Organic Semiconductors D. Venkataraman, Department of Chemistry, University of Massachusetts.

Interaction and energy transfer between single wall carbon nanotubes and a straight chain conjugated polymer in solution Christopher J. Collison, Department.

Organic Solar Cells: The Technology and the Future

TFT – Thin Film Transsistor BIPV – Built In PV.

Fabrication of SnS/SnS2 heterostructures

Presentation transcript:

O Futuro é Orgânico? O Papel dos Polímeros Condutores no Desenvolvimento de Materiais Solares Fotovoltaicos Palmira F. Silva Centro de Química Estrutural Instituto Superior Técnico Universidade Técnica de Lisboa

Outline Why PV Why OPV Enhancing OPV efficiency Conclusion

Why PV?

Why PV? ENERGY Increasing energy need ECOLOGY Pollution Human total energy use: 4.0x1014 kWh/year Incoming solar radiation (on Earth): 5.5x1017 kWh/year ENERGY Increasing energy need Exhaustion of fossil fuels Diversification of energy sources Energy for all (16% world population without electricity) ECOLOGY Pollution CO2 Responsible Climate change ECONOMY Energetically independent

Why OPVs: Advantages low cost tailoring of optoelectronic properties large areas flexible processing from solution roll to roll manufacturing light weight transparent low cost

Why OPVs: Problems

Why OPVs: Problems low ambient stability low efficiencies strongly bound excitons exciton diffusion length rather short (5-10 nm). low mobility of charge carriers μn (c-Si) > 1000 cm2/Vs μh (polymer) ≈ 0.1 cm2/Vs Organic Solar Cells

OPVs: Solving Problems Working mechanism-steps Excitons formation Diffusion of the excitons towards the interface Charge separation/electron transfer Transport of charge carriers towards the electrodes Organic solar cells performances depend on the material properties morphology (structure of the bulk hetero-junction)

Enhancing devices efficiency Better understanding of the physics Optimize the materials properties Optimize the morphology

Enhancing devices efficiency Better Understanding of the Physics of Organic Semiconductors: Photophysics Photoconductivity Thin film characterization Nanoscale microscopy (AFM,STM...)

The importance of Photophysics Conjugated polymers frequently show complex fluorescence decays in films (and solution), and knowledge of what happens in polymer excited states deactivation is important to develop strategies to improve exciton splitting.

The importance of Photophysics In the ground state, F8T2 undergoes a temperature induced transition between differently ordered conformations.

Photophysics Aim Determine the factors controlling the efficiency and energetics of charge transfer Fundamental understanding of photophysical and kinetic properties will allow us to design systems for efficient photovoltaic generation and separation of charges

Enhancing devices efficiency Optimize the materials properties Relative position of the energy levels of the donor and acceptor Better match with the solar spectrum.

Optimize the materials Optimal offset LUMO (D) – LUMO(A) for electron transfer at least 0.3 – 0.5 eV P3HT:PCBM: LUMO (D) – LUMO(A) ~1.1 eV bulk heterojunction Power conversion efficiency ~ 5 - 6% PCBM (acceptor) P3HT (donor)

Optimize the materials Improve the absorption of the solar radiation broadening the UV/Vis spectra using a polymer blend instead of a single polymer P3HT F8BT UV-Vis absorption spectra of P3HT/F8BT blend films P3HT:F8BT - 0:100 (a), 20:80 (b), 40:60 (c), 60:40 (d), 80:20 (e), and 100:0 (f).

Enhancing devices efficiency Optimize the morphology microscopic phase separation ( exciton diffusion length ~ 5 – 10 nm ) presence of carrier paths between the two electrodes

Optimize the morphology synthesis of donor and acceptor crosslinkable polymers to prepare segregated D/A columnar- like domains, at the micro- or submicrometer dimensions ArcoCell PTDC/CTM/64127/2006

Project AIM Develop and engineer new materials that promote efficient extraction of electron and hole from single exciton.

OPVs: Designing The Future

Fast Kinetics Lab – CQE/IST António Maçanita (PhD) PTDC/CTM/58767/2004 PTDC/CTM/64127/2006 Fast Kinetics Lab – CQE/IST António Maçanita (PhD) Palmira F. Silva (PhD) Roberto di Paolo (Pos Doc) Rita Rodrigues (pHD Student) Bruno Ferreira (Research Student) Technology & Materials Group – IT/IST Jorge Morgado (PhD) Ana Charas (PhD) Quirina Ferreira (Pos Doc) Luís Filipe Morgado (PhD Student) Joana Farinhas (PhD Student) Tânia Braz (PhD Student)