news digest ♦ Solar


of the employees at the Schwäbisch Hall location, thereby setting new benchmarks as a high-tech engineer for CIGS technology,” commented Dieter Manz.


HelioVolt CIGS modules certified by UL and IEC


The firm’s HVC-170X modules have received ANSI/ UL-1703, IEC-61646, and IEC-61730 certifications, as tested and certified by Intertek-ETL.


HelioVolt says its high efficiency panels offer outstanding energy yield with unprecedented reliability and performance. These monolithically integrated panels are manufactured in Austin, TX, utilising the company’s proprietary CIGS technology platform.


“The rigorous outdoor testing and reliability programs we have invested in over the past three years have given us great confidence in the superior performance of our modules. We are pleased to offer the first in a rapidly developing series of commercially available products to our strategic customers,” said Stanbery, HelioVolt’s founder and Chairman.


In September, SK TIC and SK Innovation, members of the SK Group, invested $50M to expand HelioVolt’s Austin operations and launch global manufacturing expansion to accelerate delivery of cost-effective and reliable solar energy solutions to numerous market segments.


Miller William John pays tax liability with Veeco stock


MMD Newswire says that over the past 12 months, over 220 thousand shares of Veeco Instruments Inc. stock were sold by insiders, totalling over $11.2 million, but that no shares have been purchased by insiders over the same time frame.


Miller William John performed a payment of a tax liability by selling 604 shares of Veeco Instruments Inc. (VECO) stock as noted in an SEC Filing yesterday. Miller William John’s title was listed as


188 www.compoundsemiconductor.net November/December 2011


“EVP LED & Solar” at Veeco Instruments Inc. within the filing.


Over the past 12 months, John has not sold or purchased any shares of Veeco Instruments stock. He has however performed other transactions including grants or awards and payment of tax liabilites.


MMD Newswire also says that a high-level look at insider trading at Veeco revealed that over the past 12 months, a total of 220,264 shares of Veeco Instruments Inc. stock were sold by insiders, totalling $11,235,869. It adds that over the same time 12 month time period, no shares of Veeco Instruments Inc. were purchased by company insiders.


InGaAs nanowires on silicon a hot solar cell development


The geometry of the indium gallium arsenide nanowires provides the additional benefit of enhancing solar cell performance through greater light absorption and carrier collection efficiency.


Tiny wires could help engineers realise high- performance solar cells and other electronics, according to University of Illinois researchers.


The research group, led by electrical and computer engineering professor Xiuling Li, have developed a technique to integrate compound semiconductor nanowires on silicon wafers, overcoming key challenges in device production.


Semiconductors in the III-V group are promising for devices that change light to electricity and vice-versa, such as high-end solar cells or lasers. However, they don’t integrate with silicon seamlessly, which is a problem since silicon is the most ubiquitous device platform. Each material has a specific distance between the atoms in the crystal, known as the lattice constant.


“The biggest challenge has been that III-V semiconductors and silicon do not have the same lattice constants,” Li said. “They cannot be stacked on top of each other in a straightforward way without generating dislocations, which can be thought of as atomic scale cracks.”


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