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Solar cells as a clean , non-polluting energy technology concern . This article on the history of the development of the solar cell , solar cell classification , structure and principles of the development status and existing problems of dye-sensitized TiO2 solar cells is expected to significantly reduce the cost of existing solar cell based on , but due to its larger band gap (3.2 eV), so that it can only absorb UV light , resulting in the conversion efficiency is low , so to be sensitized, in order to improve its conversion efficiency . In this paper, a transparent CdS Quantum Dot Sensitized TiO2 nano- tube array of thin film solar cells envisioned . First , the preparation of transparent TiO2 nanotube array electrode the anodizing method in ITO conductive glass , and then deposited on TiO2 electrode using successive ionic layer deposition CdS quantum dots prepared CdS Quantum Dot Sensitized TiO2 photoanode , and assembly of the battery to its performance testing and characterization . The main contents and results are as follows : 1, using a magnetron sputtering method of high quality is deposited on the ITO glass metal Ti film , and then subjected to an anodic oxidation in an ethylene glycol solution of the NH4F , and then heat treated, to prepare a transparent TiO2 nanotubes array. The analysis of the Ti film preparation and anodizing process parameters on the morphology and properties of TiO2 nanotube arrays . The results show that : in 300 ℃, the power is 150W , to 0.5Pa argon partial pressure of deposition 1H , be able to obtain a dense , uniform, closely Ti film in combination with the substrate ; anodic oxidation voltage of 40V , the electrolyte composition of 0.3wt% NH4F 1vol% H2O glycol solution heat treatment temperature of 450 ℃, the heat treatment time 2h, prepared 90- nm , the wall is about 20nm , transparent tube length 1.67μm anatase TiO2 nanotube array electrode . 2 , successive ionic layer deposition method to Cd (NO3) 2, Na2S as Cd2 S2 - ion source , CdS Quantum Dot Sensitized TiO2 photoanode prepared in different solvents . The analysis of the solvent and the number of cyclic deposition preparation photoanode performance . The results showed that: ethanol, methanol / water as a solvent , it is possible to increase the adsorption capacity of TiO2 nanotubes of CdS deposition of CdS quantum dot size of 5 -10nm and crystal orientation in the ( 110) plane by 4 cycles deposition of CdS quantum dots sensitized TiO2 nanotube photoanode highest conversion efficiency .
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