Embedded Systems Conference
Breaking News
Comments
Newest First | Oldest First | Threaded View
sixscrews
User Rank
Author
Perovskites - once more into the breach
sixscrews   4/8/2014 6:44:38 PM
NO RATINGS
Back in 1986 perovskites were the cat's pyjamas - as superconductors - and we all (or at least some of us) remember what happened after that.

So, beware - it's just a material.  What you do with it makes all the difference - or maybe it's how you market it?

ss/wb

Anand.Yaligar
User Rank
Author
Re: Did I miss something?
Anand.Yaligar   4/8/2014 2:48:35 PM
NO RATINGS
@Etmax, I believe I also got mixed up and lost just as you are; if the best solar cells have efficiency of up to 25% and the most popular solar cells work at efficiency rates of 17-19%, I still can't see how a new material that converts light to electricity at 12-15% efficiency rates can be said to be more efficient than both of the first two. Maybe their strong point is the cheaper price though if that is the case then more of the latter material will have to be used to raise those efficiency rates. Please clarify further Kevin.

prabhakar_deosthali
User Rank
Author
re:
prabhakar_deosthali   4/7/2014 8:35:47 AM
NO RATINGS
The main obstacle of today's solar energy conversion equipment is the heavy capital cost. If this can be offset by this new discovery then there will be a wide spread acceptance to using solar energy in many applications -icluding charging of EVs

mna41
User Rank
Author
Re: Perovskite Nit Pick
mna41   4/5/2014 7:09:48 PM
NO RATINGS
As Bollinger says, the mineral perovskite is calcium titanate, but the meaning of "perovskite" has been extended to the crystal structure. In the latter sense, there are many perovskites. The article is confusing because it doesn't say *which* perovskite compounds or alloys have the unusually high optical absorption (wavelengths also not specified). Moreover, perovskites, being chemical compounds, are absolutely not metamaterials. I'd have hoped for a minimally well-informed article bfrom EE Times, not the mishmash that I tried to decipher.

Terry.Bollinger
User Rank
Author
Perovskite Nit Pick
Terry.Bollinger   4/4/2014 12:23:41 PM
NO RATINGS
Perovskite is actually the mineral calcium titanate, but because it and similar compounds often have remarkable and interesting electronic properties -- David Brin even used it in his scifi novel Earth to create "intelligent planets" -- the term has also come to refer to any compound that crystallizes with a perovskite-like structure. I'm not quite sure what this compound should be called, but I strongly suspect that original intent was to say that it has a perovskite structure.

DrFPGA
User Rank
Author
Light to Electricity to Light
DrFPGA   4/4/2014 12:07:18 PM
NO RATINGS
Seems like a natural for optical transistors. Not sure how you would make complex integrated circuits out of this stuff however. Seems to be too complicated a substance to 'grow' it the way we do transistors...

Anyone know?

Etmax
User Rank
Author
Did I miss Something?
Etmax   4/4/2014 12:59:16 AM
NO RATINGS
So 12-15% earlier, how much now?? What limit predicted?



Most Recent Comments
David Ashton
 
R_Colin_Johnson
 
AKH0
 
Wilco1
 
sanyaade
 
zeeglen
 
Gondalf
 
Wilco1
 
Crusty1
Most Recent Messages
7/5/2015
7:46:09 PM
Radio
NEXT UPCOMING BROADCAST

Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.

Brought to you by

July 16, 1pm EDT Thursday
IoT Network Shoot Out
Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Special Video Section
LED lighting is an important feature in today’s and future ...
Active balancing of series connected battery stacks exists ...
After a four-year absence, Infineon returns to Mobile World ...
A laptop’s 65-watt adapter can be made 6 times smaller and ...
An industry network should have device and data security at ...
The LTC2975 is a four-channel PMBus Power System Manager ...
In this video, a new high speed CMOS output comparator ...
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...