Studied in this paper was the dependence of the photoluminescence from silicon nanocrystals on excitation wavelength and power. Only one sample was studied in great detail and which showed a clear blueshift with both increased laser intensities and increased photon energies. The two other samples that were investigated showed this eﬀect to a lesser degree. A thorough and systematic study of many samples would conﬁrm whether the eﬀect is related to the sample or related to silicon nanocrystals in general.
It is clear that silicon nanocrystals are an interesting subject of research. If quantum cutting can be exploited eﬀectively and the electrons harvested from the nanocrystals, an improvement over wafer based panels would be possible (ﬁgure 21). Secondly, silicon nanocrystals may be produced in a process signiﬁcantly cheaper than traditional panels. Thin ﬁlms are considered, and even a paint based method which would be easily and widely applicable.
Last, but most deﬁnitely not least, I’d like to thank the people in the Optoelectronic Materials research group for the opportunity to perform my bachelor’s project and their support during the project. Dolf Timmerman, Tom Gregorkiewicz, Wieteke de Boer, Kateřina Dohnalová, Saba Saeed and Ngo Ngoc Ha: thank you for your time and patience!