Solar Cells Hit New Efficiency High

01/22/2007


A new solar cell has broken the 40% efficiency barrier by combining two existing technologies to draw energy from a broader spectrum of sunlight. Developers say the device could bring solar-power costs down to $3 per watt, or $0.08 to $0.10 per kilowatt hour.

The cell reached a 40.7% conversion efficiency, meaning that it was able to convert 40.7% of the energy it received from the sun into electricity. It was developed by St. Louis-based Spectrolab , a division of Boeing Corp., with funding from the U.S. Energy Dept.'s National Renewable Energy Laboratory . Called a "multi-junction" cell, the device is manufactured in a series of layers, each of which captures a different portion of the solar spectrum. Similar technology is used by the solar cells used to power space satellites.

A Boeing release indicates the company recently has signed contracts for projects utilizing the new solar cell.





No comments
Consulting-Specifying Engineer's Product of the Year (POY) contest is the premier award for new products in the HVAC, fire, electrical, and...
Consulting-Specifying Engineer magazine is dedicated to encouraging and recognizing the most talented young individuals...
The MEP Giants program lists the top mechanical, electrical, plumbing, and fire protection engineering firms in the United States.
40 Under 40; Performance-based design; Clean agent fire suppression; NFPA 92; Future of commissioning; Successful project management principles
BIM coordination; MEP projects; NFPA 13; Data center Q&A; Networked lighting controls; 2017 Product of the Year finalists
Emergency lighting; NFPA 3 and 4; Integrated building systems; Smart lighting, HVAC design
Commissioning electrical systems; Designing emergency and standby generator systems; VFDs in high-performance buildings
Tying a microgrid to the smart grid; Paralleling generator systems; Previewing NEC 2017 changes
Driving motor efficiency; Preventing Arc Flash in mission critical facilities; Integrating alternative power and existing electrical systems
As brand protection manager for Eaton’s Electrical Sector, Tom Grace oversees counterfeit awareness...
Amara Rozgus is chief editor and content manager of Consulting-Specifier Engineer magazine.
IEEE power industry experts bring their combined experience in the electrical power industry...
Michael Heinsdorf, P.E., LEED AP, CDT is an Engineering Specification Writer at ARCOM MasterSpec.
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me