New organic solar cell offers high voltage to recharge a lithium-ion battery directly
October 12, 2012 // Paul Buckley
University of Warwick researchers in collaboration with spin-out company Molecular Solar, have created an organic solar cell that generates a sufficiently high voltage to recharge a lithium-ion battery directly, without the need to connect multiple individual cells in series.
The new solar technology development will enable portable electronic devices such as e-book readers to be re-charged on the move in low light levels and partial shading.
Modules of the high voltage cells perform well in different light conditions including partial shade making them well matched to consumer electronic devices such as e-book readers, cameras and some mobile phones.
Organic photovoltaic (OPV) cells offer new opportunities thanks to the potential for cheap manufacture, lightweight, low profile photovoltaics compatible with flexible substrates, which means they are ideally matched to portable electronic device applications.
The new OPV technology is a breakthrough as scientists have addressed the problem of low out-put voltage when the module is in low light levels or partial shading taking an important step towards rolling out cheap OPV cells in low-power portable electronics.
The scientists, from the University’s Department of Chemistry, have demonstrated a cell with an open circuit voltage of more than 7 V which delivers maximum power at more than the 4.2 V needed to power a standard lithium ion battery.
The scientists claim it is the first time these features have been demonstrated using ultra high voltage OPV cells.
Professor Tim Jones, one of the lead researchers at University of Warwick, along with Dr Ross Hatton and Professor Mike Shipman, said: “We have taken a big step towards cheap-to-make solar chargers which can top up your devices whenever they are being used – both indoors and out”.
“A small light-weight solar charger no bigger than a credit card can be fitted to the battery of an e-book reader for example, and constantly top it up with power while you are reading it - even if you are sitting inside on the sofa”.
“Alternatively, this kind of solar cell could be ideal for outdoor use as it is light-weight and portable”.
“The next step is to extend this technology outside the laboratory to make cheap OPV chargers available on a commercial scale through Molecular Solar.”
The research is detailed in the paper Ultra-high voltage multijunction organic solar cells for low-power electronic applications and was published in the journal Advanced Energy Materials.
Crucial pieces of equipment used in this research were funded through the Science City Research Alliance (SCRA) Energy Efficiency project. Molecular Solar is soon to launch a new round of fund-raising to support the commercialisation of this technology.
The University received funding from the Engineering and Physical Science Research Council (EPSRC) and the Technology Strategy Board (TSB) to go towards this research.
Image sensors manufacturer CMOSIS to be acquired by TA Associates
December 05, 2013
Private equity firm TA Associates has agreed to acquire CMOSIS, a leading pure-play supplier of high performance standard ...
Volvo starts large test with robot cars on public roads
Gartner: Qualcomm, Micron rise in 2013 chip market
Connected Lighting Alliance focuses on shaping indoor professional lighting standards
Transport for London plans new road network lighting program to trim energy use by 40 per cent
World market for direct current power systems for commercial buildings to be USD10bn by 2020
December 04, 2013
The global market value for DC power-based building technologies will grow from $609.1 million in 2013 to $9.7 billion in ...
Wireless gesture control device monitors muscle activity to decode user input
Jobs to go at Lfoundry Rousset
Tower signs deal with Shanghai hub
- 3mm × 3mm QFN IC Directly Monitors 0V to 80V Supplies
- UltraCMOS® Semiconductor Technology Platforms: A Rapid Advancement of Process & Manufacturing
- Adaptive Cell Converter Topology Enables Constant Efficiency in PFC Applications
- Isolated 4-Channel, Thermocouple/RTD Temperature Measurement System with 0.5°C Accuracy
InterviewPerformance monitoring solution helps provide intelligent control of high power systems
A performance monitoring solution designed to enable companies to monitor high power IGBT module systems in locomotive, wind turbine, High Voltage DC and industrial drive applications was unveiled this ...
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
Internet of Things (IoT) manufacturer Ciseco has launched the Raspberry Pi ‘Wireless Inventors Kit’ (RasWIK), featuring 88 pieces to provide everything a Pi owner needs to follow a series of step-by-step projects or to create their own wireless devices, without the need for configuration or even writing code.
RasWIK has been designed to be highly accessible, demystifying the dark art of wireless and enabling anyone with basic computing skills to begin building wireless devices with a Raspberry Pi. You can create anything from a simple traffic light, to a battery monitor, or even a temperature gauge that sends data to the Xively IoT cloud so billions can access the data.This month, Ciseco is giving away twelve Raspberry Pi Wireless Inventors kits, worth £49.99 each for EETimes Europe's readers to win. 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.