This document contains an outline and overview of activities exploring solar cells and photosynthesis. The activities include: 1) investigating how plant disks perform photosynthesis with and without light; 2) separating leaf pigments using chromatography; 3) measuring a solar cell's performance; and 4) making a dye-sensitized solar cell. It then discusses using a solar cell to power an alarm for a pool to prevent overflow and save water. In conclusion, it recommends further developing the alarm circuit design and adding solar cells to power it day and night.

1. AL-Bairaq
I am Discovering Materials
DSSC
Solar Filling Detector
Mohammed Al-Abdullah Anas Mouneir
Fahad Al-malki Faisal Mohammed
OMEGA

2. Outline
• Introduction
• Activity 1: Investigating the photosynthesis of
plant disks.
• Activity 2: Separating leaf pigments using
paper chromatography.
• Activity 3:Measuring a solar cells
performance.
• Activity 4:Making a dye-sensitized solar
cell.
• Product Idea:

3. Introduction
With this PowerPoint , you will ask your own
questions and find your own answer about solar
cells . AND WE WILL COVER ALL OF YOUR
QUESTIONS ABOUT SOLAR CELLS .

4. 4
Procedure :
Objective:
Photosynthesis is hundred of
times more efficient an extract-
ing useful energy from sun
than humans . We will find out
how photosynthesis
Works and what factors affect
the rate of photosynthesis in
plants
Investigating the photosynthesis of plant disks.
Activity 1

5. Results
5
time Floating
disks
without
cover
Floating
disks with
blue cover
1 min Zero Zero
2 min 1 Zero
4 min 3 1
5 min 4 2
7 min 7 2
8 min 9 4
CONCLUSION:
Photosynthesis converts light energy into chemical energy and stores the
chemical energy as glucose a simple sugar during the process of
Photosynthesis

6. Step 1
Step2
Step 3
6
:

7. 7
Carotene
Xanthophyll
Chlorophyll
b
Chlorophyll
A
Results

8. 8
Measuring a solar cells
performance . In this part of the activity , you
will obtain a brief idea of how
large the internal resistance
of solar cell is by measuring
the voltage and current

9. Result
9
12Vvolt
4ACurrent
3resistance

10. 10
Step 2
Step 5
Step 7
Step 1 Step 3
Step 6
step
4

11. Result
volt 140 mv
current 52A
resistance 0.05 OME
power 25w
11

12. Comparing Between Pigments
12
As we see there is difference between the
pigment that we and the other groups use ,
as a result the blackberry pigment is the
most efficiency to make the solar cell and
the other pigment comes less efficiency
after blackberry pigment .
result

13. 13
An alarm that sounds when the pool
is about to reach it’s limit and it’s
going to overflow, the alarm is very
useful since it prevents water
wastage.

14. 14

15. Methods
15
The electric buzzer is
connected in a circuit
with open terminals.
When the water in the
pool reaches the
terminals it completes
the circuit. Then the
buzzer will work warning
the people to stop water.

16. 16
wire
S
O
L
A
r
alarm bell
C
E
l
l
switch

17. 17
*When the pool reaches a
certain limit the alarm
will go off alerting the
people, that will help
save the water.

18. Recommendations:
18
We recommend that there be developments on the
idea by finding the electrical circuit is easy and
uncomplicated and additions solar cells through
which the work of the legislature in this day and
night .

19. 19
Many thanks to my teachers, school and AL-Bairaq
team from Center for Advanced Materials (CAM),
Qatar University for supporting us during our journey
with a AL-Bairaq.
Also, I would like to thank the sponsors UNESCO, Qatar
National Commission, Ras Gas, Maersk and Shell