---
created_at: '2014-10-07T14:59:34.000Z'
title: The LED's Dark Secret (2009)
url: http://spectrum.ieee.org/semiconductors/optoelectronics/the-leds-dark-secret
author: spectruman
points: 79
story_text: ''
comment_text: 
num_comments: 45
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story_title: 
story_url: 
parent_id: 
created_at_i: 1412693974
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- story
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objectID: '8421518'

---
[Source](https://spectrum.ieee.org/semiconductors/optoelectronics/the-leds-dark-secret "Permalink to ")