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Nano-Micro Letters

, Volume 1, Issue 1, pp 40–44

First Online: 20 December 2009Received: 30 November 2009Accepted: 15 December 2009


In this letter a formation of solution based of bulk-heterojunction based on freestanding silicon nanocrystals Si-ncs and conjugated poly3-hexylthiophene P3HT polymer is demonstrated. Surfactant free Si-ncs prepared by low-cost electrochemical etching are applied for fabrication of bulk-heterojunction and photo-conductive blends. We show that the optimum blend performance is at 40 wt% nanocrystallites concentration within the P3HT polymer matrix. Furthermore, we illustrate that solar cell transport properties can be improved by nanosecond laser fragmentation of the nanocrystallites micrograins in ethanol. It argues that the Si-ncs-polymer blend with refine nanocrystaline structure may impact the development of low-cost solar cells by environmental- friendly mean.

KeywordsSilicon Nanocrystals Electrochemical etching Solar cell  Download to read the full article text

Autor: V. Švrček


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