(Source: NIST - National Institute of Standards and Technology) Photovoltaic devices, also known as solar cells, produce electrical power when exposed to light, and that technology has enabled a fast-growing industry. The most familiar designs use rigid layers of silicon crystal. But recently, intense interest has focused on organic photovoltaic (OP) devices which use inexpensive organic semiconductor materials sandwiched between two metal electrodes. OP devices can be made flexible and easily portable. Imagine a tent that, once set up, acts as a large solar system that can be used to recharge portable electronics and lights for the upcoming night of camping. However, at this time organic...
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