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Electrical guardrails for charge carriers: A new approach to harness graphene for solar cells
来源: Phys.org - latest science and technology news stories · 发布于
Graphene is a single layer of carbon atoms in which electrons can move with high mobility, making it promising for high-speed electronic components. Yet it is not very efficient at converting light into electricity. While light absorbed by graphene does excite electrons, leaving
Graphene is a single layer of carbon atoms in which electrons can move with high mobility, making it promising for high-speed electronic components. Yet it is not very efficient at converting light into electricity. While light absorbed by graphene does excite electrons, leaving behind positively charged carriers called 'holes,' the absorbed light energy cannot be harnessed effectively unless electrons and holes are separated and directed to different contacts.
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Google admits AI search makes less money, but it's fixing that with more ads
Google parent Alphabet reported its Q3 financial results on Wednesday afternoon, showing a healthy rise in revenue for the months of July to September. But the company's stock price has taken a beating, marking one of the largest post-earnings drops in its history. It comes down
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Budget winners and losers: pensioners and households gain as banks and betting shops hit
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