PVstudent - Solar Education Resource
RSS Follow Become a Fan

Delivered by FeedBurner


Recent Posts

Advancement and Development of Electricity and Technology
Building Integrated PV
Bypass diodes
Determining low temperature that caused the inverter to go over voltage
Another NABCEP PVIP Certificate in the mail!

Most Popular Posts

Feeder PV Connections 705.12(D)(2)(1)(b)
Crimping MC4 Connectors without the tool
Converting kWh to pounds of CO2
NEC 310.15(A)(2) Exception, 10% or 10 feet or less for sizing conductors
PV Temperature coeficcients in V/C, mV/C and %/C with conversion examples

Categories

Advanced PV Course
NABCEP PV Installation Professional Exam Prep Course
NABCEP PV Technical Sales Exam Study Group (which will evolve into a full course)
PV Boot Camp and NABCEP Entry Level Exam Prep Course
powered by

HeatSpring PV Course Blog

Polycrystalline, Multicrystalline, Monocrystalline, CdTe, CIGS and Gallium Arsenide


Q:
 
How much time is it worth to spend on the various types of cells and their chemical structures and construction methods? Or is it sufficient just to be aware in general of the different cell types (mono, poly, CIGS, CdTe, etc.) and their performance characteristics?
 
A:

Since you are studying for a Technical Sales Exam, I would recommend not worrying about getting into the different details about the chemistry if you have limited time. It is good to know, however there are many other things that are more likely to be on the exam. Yes it is a good idea to know that Monocrystalline is usually better than Polycrystalline and that CIGS and CdTe are thin film and have a history of being less efficient than crystalline.
 
That being said, there are interesting developments. It has been in the news recently that the world record efficient CdTe cell has just passes the world record Polycrystalline cell efficiency. The world record efficiencies are interesting, but do not translate to cost effective solutions.
 
Also, did you know that gallium arsenide is a thin film technology that is more efficient than monocrystalline. Gallium arsenide is also very very expensive and is that they typically use in space. Too expensive for terrestrial PV.
 
I also like to point out that I would rather have 16 percent efficient tier 1 polycrystalline PV than 15 percent monocrystalline. Mono is usually more efficient, but not always.
 
Another thing is that polycrystalline silicon often refers to the raw silicon that comes in chunks. Another term used for polycrystalline modules is multicrystalline.
 
Thanks,
Sean White


0 Comments to Polycrystalline, Multicrystalline, Monocrystalline, CdTe, CIGS and Gallium Arsenide:

Comments RSS

Add a Comment

Your Name:
Email Address: (Required)
Website:
Comment:
Make your text bigger, bold, italic and more with HTML tags. We'll show you how.
Post Comment
Website Builder provided by  Vistaprint