Solar power usage is growing in the United States, Europe, and Australia, but what about developing areas that don’t even have access to basic electricity? Now that University of NSW PhD student Nicole Kuepper has developed a cheap and simple way of producing solar cells in a pizza oven, these areas might get a chance to use solar power too.

Photovoltaic cells are generally expensive to produce and require large manufacturing plants. But Kuepper’s technology needs relatively low-cost items such as ovens, ink-jet printers, and nail polish. Her iJET solar cells also use a low-temperature process.

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