Ramiro Lab

Technical University of Catalonia

Este (ES5) · Spain

ERC-funded
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ERC Consolidator Grant · 2024

It takes three to tango: semiconductors with three bands for a new generation of optoelectronic devices

Semiconductors, halfway between metals and insulators, are at the heart of the optoelectronic applications that have revolutionized our world for the last 70 years. Their hallmark characteristic is the existence of two electronic bands—the conduction and valence bands (CB and VB)—separated by a forbidden energy gap, which enables electrical and optical access to two distinct electronic populations. 3-band materials (3BM) represent a new class of semiconductor featuring three electronic bands and three energy gaps (one between each pair of bands). The driving force behind two decades of 3BM research has been the development of high-efficiency solar cells. Yet, all the attempts to fabricate…

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