Heliatek claims new world record efficiency of 10.7 percent for organic tandem solar cell
April 30, 2012 // Paul Buckley
Heliatek GmbH is claiming a new world record for organic photovoltaic (OPV) cells with 10.7% cell efficiency on 1.1 cm2. Heliatek commissioned SGS, an accredited and independent testing facility, to measure the efficiency of the company's latest OPV cells.
The key to Heliatek's success is the family of small organic molecules - oligomers - developed and synthesized at its own lab in Ulm, Germany. Dr. Martin Pfeiffer, co-founder and CTO of Heliatek, explained: "Heliatek is the only solar company in the world that uses the deposition of small organic molecules in a low temperature, roll-to-roll vacuum process. Our solar tandem cells are made of nanometers thin layers of high purity and uniformity. This enables us to literally engineer the cell architecture to systematically improve efficiency and lifetime."
The measurement campaign of SGS included efficiency measurements under standard testing conditions (STC) of the solar industry as well as performance measurements at low light and high temperatures of up to 80 °C. The test results not only set a new world record for OPV with 10.7% cell efficiency, but the additional measurements highlight the superior performance of Heliatek's OPV cells under real life conditions.
The measurement results for low light established that the efficiency not only remains constant, but even increases gradually. At an irradiation of 100 W/m² the efficiency is 15% higher compared to the standard efficiency measured at 1,000 W/m². Additionally, the measurements at high temperatures confirmed that the efficiency remains constant. This behavior is unique for OPV technology in contrast to traditional solar technology which efficiency drops 15% to 20% at elevated temperatures.
The technology advantages translate into a higher harvesting factor under real life conditions. First outdoor tests have shown that the harvesting factor of Heliatek's organic solar cells is 15% to 25% higher than crystalline and thin film solar.
Thibaud Le Séguillon, CEO of Heliatek, added: "Thanks to the close cooperation between our research teams in chemistry and physics, we are now on our path to achieving 15 % efficiency within the next few years."
Heliatek is currently working on its first roll-to-roll manufacturing line installed in Dresden, Germany, to go in production in the third quarter of 2012. The company has also kicked off a third financing round to raise €60 million from current and new investors for a new roll-to-roll 75 MWp production line.
Visit Heliatek at www.heliatek.com
Rohde & Schwarz acquires IT security company
July 29, 2014
Rohde & Schwarz is not only a well-known provider of network analysers, vector signal generators and other measurement ...
Pure lithium anode promises more efficient rechargeable batteries
High-temperature superconductivity discovery paves way for energy superhighways
BMW invoke fast battery chargers to spark EV sales
Study pinpoints how to make Li-ion batteries last longer
Audi, BMW, Daimler drive open source measurement data management
July 28, 2014
To enable a correct interpretation and comparison of test data across the automotive industry, a number of carmakers and ...
A roadmap for cool and lossless lasers, with Bismuth
ST opens MEMS microphone test laboratory
Update yourself on anti-counterfeiting measures at Mouser
- Testing GPS with a Simulator
- DSM presents: Select the best plastic for DDR4
- Dual 13A μModule Regulator with Digital Interface for Remote Monitoring & Control of Power
- Exploring the Business Model Evolution of High-Tech Equipment Manufacturers
InterviewCEO interview: China, not Apple, is way to go, says mCube CEO
Ben Lee, CEO of MEMS startup mCube, explains why he wants to spend $37 million on being a supplier of sensors to Chinese ODMs and avoiding a design win with Apple or Samsung.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Altium Ltd is offering EETimes Europe's readers the chance to win one TASKING VX-Toolset for ARM Cortex-M Premium Edition, normally licensed for 2.395 Euros, for ultra-rapid prototyping and code development around ARM Cortex-M based microcontrollers.
The VX-toolset for ARM is the first TASKING compiler suite to receive the Software Platform technology, which is seamlessly...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.