Figure 6.

Photoluminescence spectrum of PbS microstructures obtained with different processes. (a) Without surfactant at 165°C for 12 h (T165), (b) without surfactant at 180°C for 12 h (T180), and (c) with 3.6 × 10−3 M SDBS at 180°C for 12 h (T180SDBS).

Cao et al. Nanoscale Research Letters 2012 7:668   doi:10.1186/1556-276X-7-668
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