A Brief History of … Electronic Materials
Transcript of A Brief History of … Electronic Materials
A Brief History of … Electronic Materials
Weight: 0.5g (0.001 lbs)
Cost: $100 - $1502010(32 GB)
Size: 11mm x 15mm x 1mm (size of a dime)(32 GB)
1980(20 GB)
Ford F 150 Baby grand 1 TB hard Ford F-150 (~4500 lbs)
Baby grand piano (~600 lbs)
1 TB hard drive (~3 lbs)
A Brief History of … Electronic Materials
Weight: 0.5g (0.001 lbs)
Cost: $100 - $1502010(32 GB)
Size: 11mm x 15mm x 1mm (size of a dime)(32 GB)
1980(20 GB)
Ford F-150 McLauren F1 ( $9 0 000)
Paul Allen’s yacht ( $ illi )(~$30,000) (~$970,000) (~$100 million)
A Brief History of … Electronic Materials
Weight: 0.5g (0.001 lbs)
Cost: $100 - $1502010(32 GB)
Size: 11mm x 15mm x 1mm (size of a dime)(32 GB)
i h ( lb )
1980(20 GB)
Weight: 2,000,000 g (4400lbs)
Cost: $648,000 - $1,137,600
Size: 70’’ x 44’’ x 32’’ (for each 2.5 GB Size: 70 x 44 x 32 (for each 2.5 GB cabinet)
Key Semiconductor properties
1. Negative temperature coefficient of resistance conductivity increases with increasing
temperature
2. Photoconductivityresistivity depends on
5. Electroluminescencean applied voltage can resistivity depends on
the light intensityan applied voltage can
produce light
image from crunchgear.com
3. Photovoltaic effects 4. Rectification
image from allwin21.com image from instructables.com
light can produce current & voltage
resistance varies with the direction of current flow
William Adams and Richard Day – the first photovoltaic cell (Se, 1876)(below: The first solar powered battery at Bell labs, 1954)
“The birth of the point-contact transistor was a magnificent Christmas present to the Christmas present to the group…[But] my elation was tempered by not being one of the inventors.”
The junction transistor –Shockley (1948)
Technology Today
Intel quad core i7 processor (~8x109
transistors)
Multijunction solar cells (50% efficient)(50% efficient)
Flexible displays (0.3mm thick)
Materials challenges for our (your) generation
oHighly efficient, cost effective solar cells
o Solar-fuel systems and improved battery technology
o Environmental materials engineering (e g water purification) o Environmental materials engineering (e.g., water purification)
oAdvanced computing (optical computing, spin computing)
oImaging and visualization (display technology)g g p y gy
oEngineered materials (with properties not attainable in nature)
“What the world does in the coming decade will have
enormous consequences that will last for centuries. It is imperative
that we begin without further d l ” St Chdelay.” – Steve Chu