Improvement of Dye Solar Cell Efficiency by Photoanode Posttreatment

Table 1

Raman shift-𝜔 and FWHM-Γ of the of the Eg modes around 145 cm⁻¹ and 640 cm⁻¹ nanocrystalline size (Φ) dependence on the sintering temperature, estimated from the FWHM.

𝑇 (°C)	Colloidal nanoparticles						P25
	150		350		450		450
	cm^−1	Φ (nm)	cm^−1	Φ (nm)	cm^−1	Φ (nm)	cm^−1	Φ (nm)
𝜔1	157.9±0.9		149.8±1.2		146.7±1.6		144.1
Γ1	39.7±0.3	3.2 ± 0.2	17.9±2.9	7.0 ± 1.0	15.6±2.3	8.0±1.1	9.6	>23
𝜔2	640.6±0.2		640.9 ± 2.1		641.9±0.6		639.0
Γ2	80.8±1.8	3.4 ± 0.1	52.5 ± 0.6	5.1 ± 0.1	38.3±7.5	7.7±1.9	25.5	>17