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-The Art of Laying Apples- A Demonstration of Electron Transfer and Nanotechnology using Renewable Energy. Jarrod G Collins Klein Forest High School Klein ISD Dr. Haiyan Wang & Dr. Xinghang Zhang Dept of Materials Science, Electrical Engineering & Mechanical Engineering. Research Objective.

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slide1
-The Art of Laying Apples-A Demonstration of Electron Transfer and Nanotechnology using Renewable Energy

Jarrod G Collins

Klein Forest High School

Klein ISD

Dr. Haiyan Wang & Dr. Xinghang Zhang

Dept of Materials Science, Electrical Engineering & Mechanical Engineering

research objective
Research Objective

Thin Film = A thin layer of coating on a substrate

or a template

Used for energy, protection, conducting, storage

  • Can we improve thin film quality by tuning the growth parameters to achieve an ordered arrangement? (Research Question)

Synthesis of Thin film using (PLD) (MS)

Microstructure characterization using (TEM)

Property characterization (XRD) (SEM) (VSM)

(PPMS)

real world applications of thin film technology
Real World Applications of thin film technology

Microelectronics

(cpu processors, cell phones, ipod, watches)

Solar Panels, Fuel Cells

AR (anti-reflective coatings)

On cars, jewelry, mirrors, night vision goggles

Corrosion/wear/oxidation resistance

On cutting tools, chemical factories

Sunscreen

background information
Background Information

What is a photovoltaic cell?

Device that can convert sunlight directly into electricity

Also called a Solar Cell

Based on using photons to separate charges

Thin-film photovoltaic cells are included in the TIME\'s Best Inventions of 2008

background information1
Background Information

Grätzel cell is a type of PV cell.

How does it work? Photons strike the cell and their energy is absorbed by the fruit dye.

Electrons become excited, get free of the dye and move thru the TiO2 to produce a current.

The Cyanin dye must be attached & held to the nanoparticle TiO2 and it must be able to absorb the photons\' energy.

Comparison / Contrast between DSSC and traditional silicon-based solar cell

AdvantagesDisadvantages

• Performance/Price aspect Slightly lower efficiencies

• No need for expensive equip Certain dye’s breakdown

• Functions in low light conditions Liquid electrolytes can leak

• Materials are extremely low $

nano structured dye sensitized thin film solar cell
Nano-structured Dye Sensitized Thin Film Solar Cell
  • Grätzel Cell fabrication related concepts

Gratzel demonstrationWhy do we need to create Gratzel cells?

  • Biological extraction
  • Chromatography
  • Physical chemistry
  • Spectroscopy
  • Environmental Science
  • Electron Transfer
  • Photosynthesis
  • Alternative Energy
  • Nanotechnology
core aspect from research
Core aspect from research
  • The core aspect of my research project being bridged into my classroom project

is the concept of using nanotechnology to improve thin film synthesis

  • We will use solution based Deposition , concepts related to PV cells & alternative energy with an emphasis on fundamental Science
  • We still study the properties & characteristics, looking at voltage, current, efficiency
relevant taks teks
Relevant TAKS/TEKS

The relevant TAKS is objective 4 (Chemistry)

The relevant TEKS are:

5B   identify and measure energy transformations and

exchanges involved in chemical reactions

8A The student knows how atoms form bonds to acquire a

stable arrangement of electrons

   identify characteristics of atoms involved in chemical bonding

8C   compare the arrangement of atoms in molecules, ionic crystals,

polymers, and metallic substances

10A  The student knows how to identify common

oxidation-reduction reactions processes.

15A The student knows factors involved in chemical reactions

15B The student is expected to verify the law of conservation of

energy by evaluating the energy exchange that occurs as a

consequence of a chemical reaction

pre post test sample questions
Pre/Post test sample questions

Solar photovoltaic cells were originally developed for:

a) desert cooling

b) winter use

c) the space program

d) brick houses

The act of applying a thin film to a surface is called:

a) Thin Film evaporation

b) Thin Film building

c) Thin Film deposition

d) Thin Film pattering

Solar cells require plenty of maintenance T or F

how can you power your ipod using thin film nano technology alternate energy
How can you power your Ipod using thin film Nano-technology & alternate energy?

Allow students to brainstorm ideas

Motivate/Encourage/Teach them to use the Scientific Method & follow the 5E model

Guiding questions worth contemplation and exploration by the student

What effect will global warming have on my neighborhood and family?

Which energy is a safe option for our future energy needs?

How can the properties and components of matter be used to predict its behavior?

The 5 E model

Engage, Explore, Explain,

Elaborate, Evaluate

day to day outline
Day to Day outline

Day 1 – Lecture, Project Announcement, Reading passage

Day 2- Pre-Test, Brainstorming, Lab activity, Wordsearch

Day 3- Starboard vocab activity, groups assigned, materials presented

Day 4,5- Construction of thin film solar panel

Day 6,7- Lab testing/evaluation of finished project

Day 8 – Field testing/redesign if necessary

Day 9- Groups share results/Post test

details of class project
Details of class project

Coat slides with Nano Titanium Dioxide

identifying the conducting slide

heat glass on hot plate to dry surfactant

Stain Titanium Dioxide with Anthocyanins

details of class project1
Details of class project

Carbon-coated counter electrode

Assembling the Solar Cell

Assemble and clamp plates

Add triiodide solution

field test re design
Field test/Re-design

Test and evaluate finished thin film solar cell

Determine output characteristics

-Activities with the Grätzel Solar Cell-

• Current and Voltage obtained with different fruit dyes

• Parallel and Series Circuits with a number of solar cells

• Running a small motor with a solar cell

• Electrical power obtained when using different dyes

• Comparision of a silicon solar cell with a Grätzel Solar Cell;

• Effects of different light bulbs (halogen, colored, etc.) on the cell;

• Grätzel Solar Cell powered calculator

• Intensity of light vs current / voltage obtained

sample data
Sample Data

Anthocyanins are water-soluble flavonoid pigments present in fruits such as raspberries, blueberries, blackberries, and blueberries.

UV-VIS spectrometer results

Blackberry (peak around 539-540 nm, abs = 0.546):Pomegranate-cranberry (peak at 539 with an abs of 0.35):

sample data1
Sample Data

Description Voltage (volts) Current (microamperes)

Blueberry 0.340 300

Pomegranate/

Cranberry 0.337 90.8

Pomegranate/Cranberry gave less current, so it possibly has lower cyanin value

Blueberries have better results, thus probably a better dye to use.

materials needed for classroom
Materials needed for classroom

Institute for Chemical Education kit for construction of solar cell

Nanocrystalline Dye-Sensitized Solar Cell Kit

$45.00

The kit will allow 5 cells to be made

5 groups per class

That figures out to 1 class per kit

why is this project relevant
Why is this project relevant?
  • We need to make better use of renewable resources
  • We need to improve thin film synthesis as it applies to solar panels/fuel cells
  • Area of Science is still growing
  • Expose students to important interdisciplinary research
acknowledgements
Acknowledgements

Nuclear Power Institute (NPI)

Journal of Chemical Education vol. 75 No.6

MichealGrätzel & Greg Smestad

Dr. Wang and Dr. Zhang

Zhenxing Bi & Joon Lee Ph.D. Candidate

Steven Rios & Chenfong Tsai Ph.D. Candidate

The entire E3 faculty

Diane Hurtado, AshwinRao

Especially Matthew Pariyothorn, Dr. Cheryl Page

Dr. Robin Autenrieth & Dr. ArunSrinivasa

All of the E3 Participants, Master Teachers

Guest Lecturers & IGERT students

Video, pictures, & sample data

Used from:

Alan D. Gleue

Exploratorium Teacher Institute

Jill Johnson & Stephanie Chasteen

Loughborough University

www.bath.ac.uk/powerttp/

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