**5.3 1-dimensional (1D) titanium dioxide (TiO2) nanorod**

One-dimensional (1D) nanostructures (e.g., nanowires, nanorods, nanotubes, nanobelts, cauliflower-shaped structures) have been widely considered to have superior electron transport characteristics compared to conventional nanorod (NP) -based systems. Eariler reported research have demonstrated that highly efficient TiO2 nanorod-based NR DSSCs and compare charge transport properties to those of typical TiO2 nanoparticle-based (NP, commercially available P-25) NP-DSSCs [35]. The electrospun TiO2 NR based photoelectrodes exhibited about 2 times larger the pore volume and 2.5 times more dye coverages at the same weight than those of TiO2 NP. Therefore, NR based cell indicated about 40% higher efficiencies than NP-DSSCs attribied to 8 times slower electron–hole recombination in NR-DSSCs. With the TiCl4 post-treatment, further enhancement of electron diffusion coefficient, a charge collection efficiency and the efficiency can be demonstrated [35].

**BET & BJH**

**217**

**Surface area**

**Pore Volume**

**λmax (at**

**# of mole. (108**

*D***eff ( 105**

**Rk/R**

**w** *ns* **(1018**

**D1 (106**

**Rtotal**

*V***OC**

*J***sc**

*FF*

**EFF**

**cm3**

**)**

**cm2**

**s**

**)**

**(Ω)**

**(V)**

**(mA/cm2**

**)**

**(%)**

**(%)**

**1**

**cm2**

**s**

**)**

**1**

**(m2**

NP

—

w TiCl4

SP

—

w TiCl4

w

—

——

 —

TiCl4/

3D

**Table 4.** *Parameters*

 *for the best fit of the impedance*

 *and Photovotaic*

 *data for doctor bladed and E-sprayed TiO2 film. Measured in Figure 21.*

114.0

0.915

 0.772

188.47

1.365

 0.514

55.98

0.445

 0.504

65.33

0.607

 0.410

3.65 3.97 5.80 8.06

3.29

3.49

 3.13

 10.0

 0.43

 18.2 0.827

 17.24

 71.3 10.1

 3.39

 9.40

 0.45

 19.2 0.829

 15.96

 71.4 9.45

1.83

 6.79

 6.07

 0.78

 33.0 0.831

 12.28

 73.1 7.46

3.24

 2.14

 11.2

 0.21

 23.7 0.796

 15.92

 66.8 8.47

2.58

 2.38

 9.39

 0.32

 31.5 0.815

 12.38

 72.2 7.28

**g1**

**)**

**(cm3**

**g1**

**)**

**498 nm)**

**mol /mg)**

**Absorption**

 **Properties**

**Electrical Properties**

**Solar Properties**

*A New Generation of Energy Harvesting Devices DOI: http://dx.doi.org/10.5772/intechopen.94291*
