Towards CMOS-compatible, solution-processed quantum dot nanocrystal optical sources, modulators, detectors, and optical signal processing elements across the extended communications band 1200-1700 nm

We review devices, fabricated using room-temperature solution spin-casting compatible with silicon post-processing, which produce, detect, modulate, and process optical signals in the spectral range from 1200-1700 nm. We first summarize the synthesis of PbS (lead sulphide) quantum dot nanocrystals 2-10 nm in diameter by solution chemistry. We then discusses the realization to date of solution-processed, silicon-compatible thin-film devices fabricated using these materials.