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![TIL that although red, yellow and green LED lights have been widely available since the 1960s, blue and white LEDs did not exist until the 1990s. The people who invented the blue LED won the Nobel prize for it in 2014, as it finally allowed for them to ... TIL that although red, yellow and green LED lights have been widely available since the 1960s, blue and white LEDs did not exist until the 1990s. The people who invented the blue LED won the Nobel prize for it in 2014, as it finally allowed for them to ...](https://external-preview.redd.it/q2aRDVEeMcn8wKBPZ-xabFxVvRMuG5zQca7RJrPRXxI.jpg?auto=webp&s=875f928e3f44c297754ea77d723d231519f35c17)
TIL that although red, yellow and green LED lights have been widely available since the 1960s, blue and white LEDs did not exist until the 1990s. The people who invented the blue LED won the Nobel prize for it in 2014, as it finally allowed for them to ...
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High Efficiency Blue and Green Light-Emitting Diodes Using Ruddlesden–Popper Inorganic Mixed Halide Perovskites with Butylammonium Interlayers | Chemistry of Materials
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