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The shape of size‐controlled silicon nanocrystals (Si NCs) embedded in SiO2 is investigated by tomographic energy‐filtered transmission electron microscopy (EFTEM). The sphericity of the quantum dots is determined by computational analyses. In contrast to other fabrication methods, we demonstrate that the NCs in superlattices are non‐agglomerated, individual clusters with slightly oblate spheroidal...
A membrane based silicon nanocrystal p‐i‐n diode is presented that enables the photovoltaic characterization of silicon quantum dots produced by high‐temperature routes. The membrane p‐i‐n diode decouples silicon nanocrystal formation from the formation of selective contacts and therefore enables extraction of the full photovoltaic potential. Open‐circuit voltages of up to 370 mV are shown, which...
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