Spectrolab

Spectrolab is a United States aerospace and defense technology company headquartered in Sylmar, California. Its principal business is the development and manufacture of solar cells and solar panels designed for spacecraft, where high efficiency, radiation tolerance, reliability, and low mass are critical engineering requirements. The company is also associated with optoelectronic and lighting technologies for aerospace, military, and other specialized applications. The company was founded in 1956 by entrepreneur and philanthropist Alfred E. Mann. It originally operated as a division of Textron. In 1975, Spectrolab was acquired by Hughes Aircraft Company and continued as a Hughes subsidiary for the following decades. Boeing acquired Spectrolab in 2000, after which the company became part of Boeing's broader aerospace and defense organization and is identified with Boeing Defense, Space & Security. Spectrolab's best-known technology is its multi-junction photovoltaic architecture. Unlike conventional terrestrial silicon photovoltaic cells, these space cells use multiple semiconductor materials to capture different portions of the solar spectrum. The company's ultra-triple-junction technology has used materials including germanium, indium gallium phosphide and gallium arsenide. This design supports high conversion efficiency in the demanding environment of orbit and is intended for integration into spacecraft solar arrays and panels. Spectrolab has reported several notable efficiency results. Its NeXt Triple Junction cells are described by the company as having a minimum average efficiency of 29.5 percent under requirements associated with AIAA-2005-111 and AIAA-2005-112. In 2006, testing at the U.S. National Renewable Energy Laboratory recorded 40.7 percent efficiency for Spectrolab triple-junction cells under concentrated sunlight. In 2013, a separate NREL test recorded 38.7 percent efficiency without concentration, described at the time as a world record for that measurement category. These results helped reinforce the company's position in high-efficiency space and concentrated-photovoltaic technology. By 2013, Spectrolab stated that it had manufactured more than four million space-qualified multi-junction solar cells or solar panels for the industry. Its products have been associated broadly with space missions and spacecraft power systems, although the supplied reference material does not identify a complete mission-by-mission customer list. The company has also adapted its space photovoltaic expertise for terrestrial use through concentrator systems. Its terrestrial concentrating cell technology is described as achieving more than 30 percent minimum average efficiency under AM1.5D illumination at concentrations between 200 and 400 suns in production. Spectrolab's market position is therefore that of a specialized, high-reliability component supplier rather than a consumer solar brand. Its work is concentrated on spacecraft power generation, advanced photovoltaic materials, solar-array integration, and related optoelectronics. The company remains a Boeing subsidiary and an active participant in international aerospace and defense supply chains.

Spectrolab was established in 1956 by Alfred E. Mann, an American entrepreneur and philanthropist. The company began as a division of Textron and developed a specialized identity around optoelectronic and photovoltaic technologies. Its later history is closely tied to the consolidation of the aerospace electronics industry: Hughes Aircraft Company acquired Spectrolab in 1975, making it a Hughes subsidiary. During the Hughes period, Spectrolab continued to develop solar-cell technologies for spacecraft and other demanding applications. Space photovoltaic systems require more than basic energy conversion. They must operate reliably in a radiation environment, tolerate thermal cycling and vibration, fit within spacecraft mass and deployment constraints, and maintain performance over an extended mission. These requirements encouraged the use of multi-junction semiconductor structures rather than ordinary terrestrial photovoltaic designs. Boeing acquired Spectrolab in 2000. Following the transaction, Spectrolab became part of Boeing's aerospace and defense operations and is associated with Boeing Defense, Space & Security. The acquisition placed the company within a large aerospace prime contractor while preserving its identity as a specialized manufacturer of spacecraft solar cells and panels. A major technical theme in Spectrolab's development has been the use of compound-semiconductor multi-junction cells. Its ultra-triple-junction designs have used germanium, indium gallium phosphide and gallium arsenide layers. By combining materials with different band gaps, these cells can capture a broader range of the solar spectrum than single-junction devices. The resulting architecture is particularly valuable in space, where launch cost and available array area make high power density important. Spectrolab's reported performance milestones include a company-stated minimum average efficiency of 29.5 percent for its NeXt Triple Junction cells under requirements associated with AIAA-2005-111 and AIAA-2005-112. In 2006, testing at the National Renewable Energy Laboratory measured 40.7 percent efficiency for Spectrolab triple-junction cells under concentration. In 2013, NREL testing measured 38.7 percent without concentration, which the reference material identifies as a world record at that time. These results reflected the company's focus on advanced photovoltaic performance rather than mass-market solar manufacturing. By 2013, Spectrolab stated that it had manufactured more than four million space-qualified multi-junction solar cells or solar panels for the industry. The reference material does not provide a complete list of missions, customers, production sites, or current executives, so those details are not expanded here. The company has also pursued terrestrial applications by adapting its space-cell technology to concentrating photovoltaic systems. Its production terrestrial concentrating cell is described as delivering more than 30 percent minimum average efficiency under AM1.5D illumination at 200-to-400-sun concentration. Spectrolab's current identity is consequently that of a Boeing-owned specialist serving spacecraft power and advanced optoelectronics markets. Its historical importance lies in the development and industrialization of high-efficiency multi-junction solar technology for space, together with the transfer of that expertise into concentrated terrestrial photovoltaic applications.

• 2013

  38.7% non-concentrated efficiency result

  [1]Spectrolaben.wikipedia.org

  NREL testing measured 38.7% efficiency for a Spectrolab triple-junction cell without concentration, reported as a world record at the time.

• 2013

  More than four million space-qualified cells or panels

  [1]Spectrolaben.wikipedia.org

  Spectrolab stated that it had manufactured more than four million space-qualified multi-junction solar cells or solar panels for the industry.

• 2006

  40.7% concentrated-cell efficiency result

  [1]Spectrolaben.wikipedia.org

  National Renewable Energy Laboratory testing measured 40.7% efficiency for Spectrolab triple-junction cells under concentrated sunlight.

• 2000

  Boeing acquisition

  [1]Spectrolaben.wikipedia.org

  The Boeing Company acquired Spectrolab and incorporated it into its aerospace and defense business structure.

• 1975

  Acquired by Hughes Aircraft Company

  [1]Spectrolaben.wikipedia.org

  Hughes Aircraft Company acquired Spectrolab, which then operated as a Hughes subsidiary.

• 1956

  Spectrolab founded

  [1]Spectrolaben.wikipedia.org

  Alfred E. Mann founded Spectrolab in the United States. The company originally operated as a division of Textron.

A specialist supplier of high-efficiency, space-qualified photovoltaic and optoelectronic systems for aerospace, defense, and selected terrestrial concentration applications.

• Space photovoltaic cells

  NeXt Triple Junction solar cells

  NeXt Triple Junction is Spectrolab's high-efficiency multi-junction photovoltaic technology for spacecraft applications. The company describes the cells as having a minimum average efficiency of 29.5% against requirements associated with AIAA-2005-111 and AIAA-2005-112. The architecture combines semiconductor materials with different spectral responses to produce more power from a limited spacecraft array area.

• Space photovoltaic cells

  Ultra Triple Junction solar cells

  Spectrolab's ultra-triple-junction cells use compound semiconductor materials including germanium, indium gallium phosphide and gallium arsenide. The multi-layer design is intended to achieve high conversion efficiency in space power systems, where radiation exposure, thermal cycling, mass limitations and long operating lives impose demanding qualification requirements.

• Spacecraft power systems

  Space solar panels

  Spectrolab manufactures space-qualified solar cells and panels for integration into spacecraft power systems. The reference material describes the company as a manufacturer of space solar cells and panels and states that it had produced more than four million qualified multi-junction cells or panels by 2013. Specific spacecraft programs are not identified in the supplied sources.

• Concentrator photovoltaics

  Terrestrial concentrating photovoltaic cells

  Spectrolab adapted its space photovoltaic technology for terrestrial concentrator systems. Its production terrestrial concentrating cell is described as achieving more than 30% minimum average efficiency under AM1.5D illumination at concentration levels between 200 and 400 suns. These systems use optical concentration to direct more sunlight onto a small, high-efficiency cell.

• Aerospace optoelectronics

  Aerospace lighting and optoelectronic systems

  Spectrolab is also associated with lighting systems and optoelectronic devices for aerospace, defense and specialized commercial applications. The supplied references do not provide product-family names, launch dates or detailed specifications, so this entry is limited to the company's documented broad activity rather than assigning unverified model names.

• 2000

  Boeing acquisition of SpectrolabM&A

  Background

  Spectrolab was a Hughes subsidiary specializing in space solar cells and related technologies.

  Action taken

  The Boeing Company acquired Spectrolab and made it part of its aerospace and defense organization.

  Aftermath

  Spectrolab became associated with Boeing Defense, Space & Security and remained focused on specialized spacecraft power and optoelectronic products.

  Source

• 1975

  Hughes acquisition of SpectrolabM&A

  Background

  Spectrolab had operated as a Textron division since its founding. Hughes Aircraft Company acquired the business as part of the ownership changes recorded in the company's corporate history.

  Action taken

  Hughes Aircraft Company acquired Spectrolab, which became a subsidiary of Hughes.

  Aftermath

  Spectrolab continued under Hughes ownership until its later sale to Boeing in 2000.

  Source

1. 1Spectrolaben.wikipedia.org
2. 2Spectrolab official websitespectrolab.com