20.109(F11): Mod 3 Day 4 Solar cell assembly

From OpenWetWare

(Difference between revisions)
Jump to: navigation, search
Line 10: Line 10:
===While You Were Out===
===While You Were Out===
[[Image:Photo050.jpg|thumb]]
[[Image:Photo050.jpg|thumb]]
-
The TiO<sub>2</sub> mineralized SWNT:phage complexes that you left last time have been dried overnight in a vacuum oven at room temperature.  The dried substance was then ground, using a mortar and pestle into a powder on the micrometer scale.  To this ground material, a paste of pure TiO<sub>2</sub>
+
The TiO<sub>2</sub> mineralized SWNT:phage complexes that you left last time were dried in a vacuum oven at room temperature.  The dried substance was then ground, using a mortar and pestle into a powder on the micrometer scale.  To this ground material, a paste of pure TiO<sub>2</sub>, ethyl cellulose (for viscosity) and terpineol (an organic solvent).  To the right can be seen the image of the paste before the SWNT:titania powder was added (left) and after (right).

Revision as of 18:36, 17 November 2011

20.109(F11): Laboratory Fundamentals of Biological Engineering

Home        People        Schedule Fall 2011        Assignments        Lab Basics        OWW Basics       
DNA Engineering        System Engineering        Biomaterials Engineering              

Contents

Solar Cell Assembly

Introduction

The principle of our dye-sensitized solar cells is that light absorption by a dye will provide the energy to transfer its electrons to a mixture of titania and titania coated SWNT:phage complexes, which will act as a shuttle to deliver the electrons to an external circuit for extraction of "useful" energy. During the first two lab sessions of this third module, you worked to coat genetically-modified M13 phage with single walled carbon nano-tubes and to mineralize TiO2 upon them. (These steps are summarized visually in the top of the figure to the right) Now it's time to use these complexes to construct the anode of the dye-sensitized solar cell. (The anode can be seen in the bottom left of the image to the right)


Protocols

While You Were Out

The TiO2 mineralized SWNT:phage complexes that you left last time were dried in a vacuum oven at room temperature. The dried substance was then ground, using a mortar and pestle into a powder on the micrometer scale. To this ground material, a paste of pure TiO2, ethyl cellulose (for viscosity) and terpineol (an organic solvent). To the right can be seen the image of the paste before the SWNT:titania powder was added (left) and after (right).
Personal tools