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Polyatomic molecules with emission quantum yields >20% enable efficient organic light-emitting diodes in the NIR(II) window - Nature Photonics
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The emission of light by polyatomic molecules in the spectral region of the second near-infrared (NIR(II)) window is severely hampered by the energy gap law, namely the quenching induced by exciton–vibration coupling. As a result, organic light-emitting diodes (OLEDs) with efficient emission wavelengths of ~1,000 nm and above are rare, despite their potential for phototherapy and bioimaging.
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