Highly multicolored light-emitting arrays for compressive spectroscopy

Miniaturized, multicolored light-emitting device arrays are promising for applications in sensing, imaging, com-puting, and more, but the range of emission colors achievable by a conventional light-emitting diode is limited by material or device constraints. In this work, we demonstrate a highly multicolored light-emitting array with 49 different, individually addressable colors on a single chip. The array consists of pulsed-driven metal-oxide -semiconductor capacitors, which generate electroluminescence from microdispensed materials spanning a diverse range of colors and spectral shapes, enabling facile generation of arbitrary light spectra across a broad wavelength range (400 to 1400 nm). When combined with compressive reconstruction algorithms, these arrays can be used to perform spectroscopic measurements in a compact manner without diffractive optics. As an example, we demonstrate microscale spectral imaging of samples using a multiplexed electrolu-minescent array in conjunction with a monochrome camera.

Automated summary

In this work, a highly multicolored light-emitting array with 49 different, individually addressable colors on a single chip is demonstrated. The array consists of pulsed-driven metal-oxide-semiconductor capacitors that generate electroluminescence from microdispensed materials, allowing arbitrary light spectra to be generated across a broad wavelength range. When combined with compressive reconstruction algorithms, these arrays can be used for compact spectroscopic measurements without diffractive optics. As an example, microscale spectral imaging of samples is demonstrated using a multiplexed electroluminescent array in conjunction with a monochrome camera.