Evaluation of the charge-collection efficiency of dye-sensitized nanocrystalline TiO2 solar cells

Article Abstract:

Research was conducted to assess the charge-collection efficiency of dye-sensitized nanocrystalline TiO2 solar cells using intensity modulated photovoltage spectroscopy and intensity modulated photocurrent spectroscopy. Three models for examining the relation between the ratio of the time constants for charge recombination and charge recombination and the charge-collection efficiency were taken into account. Results demonstrate that expressions are derived for measuring the time constants from the steady-state electron concentration profile.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Initial photochemistry of bilirubin probed by femtosecond spectroscopy

Article Abstract:

The performance of time-resolved fluorescence and absorption measurements in bilirubin and time-resolved fluorescence measurements on bilirubin model compounds in different solvents is discussed. Findings reveal very fast relaxation to the lower excitonic state after excitation of bilirubin.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code:

Photochemistry of NO chemisorbed on TiO2(110) and TiO2 powders

Article Abstract:

Research is presented demonstrating the photodecomposition of chemisorbed NO on compressed high area TiO2 powders and TiO2 single-crystal subrate. Ultraviolet and infrared radiation is used.

User Contributions:

Comment about this article or add new information about this topic:

Comment:  (50-4000 characters)

Name:

E-mail:

Security Code: