MIT's OpenCourseWare (OCW), the freely available web-based publication of virtually all MIT course content, recently modified its publishing environment and completed the migration of all its courses.
As part of that transition, OCW also improved the site architecture. Unfortunately, that means most of the URLs on the site have changed. MIT websites that link to OCW content should take a moment to update links.
Please contact the OCW team with any questions
This illustration shows a lead sulfide quantum dot array. Each quantum dot (the colored clusters) is 'passivated' by molecules that bind to its surface. Dots that are made up of unequal amounts of lead and sulfur tend to cause electrons (shown in red) to become highly localized, which can substantially lower the electrical transport of the device.Image: Donghun Kim and Jeffrey C. Grossman
Balance is key to making quantum-dot solar cells work
MIT team finds that the ratio of component atoms is vital to performance.
