Comment from AES
This new technology isn’t commercially available yet. Even if it were, it might not immediately make sense for residential and small commercial PV solar solutions due to its low efficiency relative to mono/poly crystalline silicon modules we currently use (less than 10% for thin-film “abundant earth materials” versus 17-18% for Crystalline Silicon). With typical client scenarios having limited roof real estate for module installation, we must utilize the highest efficiency PV modules we can afford in order to maximize system power production. That said, this new technology does show great promise for use in the longer term as research yields further enhancements in power efficiency. AES is excited to see continuing research in these areas and will continue to follow ongoing development by IBM and other research leaders.
New solar cell developed by IBM is 40% more efficient than previous cells made from abundant earth materials
Solar energy is relatively expensive and slow to be adopted, contributing less than 0.01% of our electricity supply. The quest for affordable solar power that can be deployed on a wide scale is a major research challenge. IBM recently announced a breakthrough in creating a new solar cell from abundant earth materials that is 40% more efficient than prior devices made utilizing these same materials. Use of the earth-abundant materials is expected to lead to a low-cost technology that can be deployed pervasively.
According to an article published in Advanced Materials in February 2010, the new cell is composed of copper, tin, zinc, sulfur and/or selenium, and its power conversion demonstrates an efficiency of 9.6 percent, close to the level needed for commercial solar panels. Even the manufacturing process is easier, using established techniques including printing, dipping and spray coating.
In another recent development, IBM Research and scientists at Saudi Arabia’s national research organization announced a plan to combine new solar power technology with new water filtering technology to produce a breakthrough in solar-powered sea water desalination.
IBM’s solar cell research builds on its expertise in microprocessor technology and materials manufacturing. IBM does not plan to manufacture solar technologies, but is open to partnering with solar cell manufacturers to demonstrate the technology.
