Improving the photon collection efficiency in light-sensitive devices is key for the development of next generation optical detectors and solar cells. In this talk, I will present two paradigmatic examples that illustrate how laser additive manufacturing (AM) can be used to fulfill this goal. The first one consists in the fabrication of micro-optical elements by laser printing of polymeric materials. Thus, light concentrators such as microlenses or microlens arrays can be directly obtained with controlled geometry and size at targeted positions in optoelectronic devices. The second one is based on the laser-induced localized growth of stable perovskite crystals with diverse forms, ranging from microcrystals to nanocuboids. By simply scanning the laser beam in a precursor solution spread on top of a substrate, luminescent and photoconductive wires and microplates can be arbitrarily generated. The so-fabricated optoelectronic systems show excellent performance, while maintaining the core advantages of AM in terms of customization, single-step processing and in-situ synthesis. These results pave the way for low cost printed electronic devices that exhibit an enhanced optical response.
Martí Duocastella, "Laser additive manufacturing for enhanced performance of optoelectronic devices (Conference Presentation)," Proc. SPIE 10523, Laser 3D Manufacturing V, 105230F (Presented at SPIE LASE: January 30, 2018; Published: 14 March 2018); https://doi.org/10.1117/12.2297102.5751467285001.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the proceedings. They include the speaker's narration with video of the slides and animations. Most include full-text papers. Interactive, searchable transcripts and closed captioning are now available for 2018 presentations, with transcripts for prior recordings added daily.
Search our growing collection of more than 16,000 conference presentations, including many plenaries and keynotes.