Solar Hydrogen Project Group Update 16 th June 2009

Solar H 2 project update: FZ Ashden Award meeting: poster not located yet/ have ed Victoria UniSurrey/ WO 3 : some more information on preliminary results, issues on substrate dimension? (see following slide) Bioreactor upgrading/connections (Sartorius and Aflex Hose Ltd.) Design issues and progress and meetings with Paul

Hi Fessehaye; Please find attached some results I have secured on your requirements. They are preliminary, and I am sure some annealing would further enhance the WO3 content. Can you also let me know about your group and your line manager, so that I can speak to Ravi and arrange how to proceed, if you think the films I have grown are acceptable? Kind Regards Damitha Dear Damitha, I discussed the results with my colleagues and line manager and everyone was pleased to see the good progress. We are interested to proceed and we have a meeting tomorrow on the specifics and way forward. Please could you provide me some information on the experimental setup and procedure you used, i.e:- the precursor; substrate type and dimension; deposition method, temperature and time; annealing temperature and time and film thickness. Thank you Fessehaye Hi Fessehaye; I used DC reactive sputtering for the film. It was on soda lime glass, we can accommodate up to 5 cm* 5 cm substrates, upto 2.5 mm thick. The growth rate is very slow, 1.5 nm/min. The substrate is held at room temperature. I have not performed post deposition anneal, since our Raman is with the wrong laser for probing WO3. The Pd layer you require on top is just a formality. Hope this helps. Damitha

Description: Polyvent M Flat Channel Product Details: Code: Description: Polyvent 300 2M Flat Channel Brand: Brand Colour: WHITE Material: PVC Dimensions Length: 2 Width: Height: 0.29 Polyvent 300 Flat Channel Connector Polyvent 300 Round To Rectangular Polyvent 300 Elbow Bend / Plenum Various commercially available design systems

UniSurrey feasibilty study Results

C. Matei Ghimbeu et al, Thin Solid Films 515 (2007) 5498–5504 Room-temperature Raman spectra of (a) as-deposited WO3 film at 350 °C (1 ml/h for 1 h) and (b) annealed at 500 °C for 2 h in air.

Solar Hydrogen Project: PG Meeting with SD arranged to discuss methodology. Summary of process has been produced

Solar Hydrogen Project: CC

length0.06m width =0.02m sheet t (mm)area (m2)dV (mV)dV/ E E E E E E E E E E E E E

Solar Hydrogen Project: SD Solar Simulator: one more thing after another! Doctor Blade machine: received and checked. Start on Wednesday Electrchem09: draft abstract circulated

Solar Hydrogen Project: SD Muffle Furnace: –BCF 11/8:~£1160 –Chamber dims.: 180x190x235 mm –Outer dims: 500h x 530w x 450d mm –  will fit fume cupboard

Solar Hydrogen Project: SD Photoelectrolysis meeting: Harrison (Thomas Young Centre) and Alford (Materials) –Discussed the potential for collaboration between the Solar Hydrogen and Nanostructured Materials programmes –NA: has capability for the deposition of well- characterised materials: May be able to deposit WO 3 and Fe 2 O 3 –NH: modelling semiconductor properties from “first” principles; predicting materials for study

Solar Hydrogen Project: SD

Ir Deposition O2O2 H2H2 Solar Hydrogen Project: PB

Reactor Design & CC-124 Growth Data Bojan Tamburic

Reactor design history

Vertical flat-plate 1l reactor

Culture reactors

Sartorius reactor – OD and pH

Sartorius reactor – growth rates