FW: Gold

Ed Myers edmyers at stanford.edu
Wed Jan 13 13:31:37 PST 2010


All,

Here is a request from an anxious prospective lab member to convert 
one of our doped poly furnaces to gold contaminated.  They are under 
a SBIR deadline, so they are anxious to have a resolution.

Ed


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>13 Jan 2010 21:22:48 GMT;RgBXADoAIABHAG8AbABkAA==
>Subject: FW: Gold
>Date: Wed, 13 Jan 2010 13:22:48 -0800
>X-MS-Has-Attach: yes
>X-MS-TNEF-Correlator:
>Thread-Topic: Gold
>Thread-Index: AcqTCLmLOumGV0zxQ22RekcwmIFejAAAPdLQAGMrzvA=
>From: "Thulasidharan Gandhi" <thulasidharan.gandhi at dxray.com>
>To: "Ed Myers" <edmyers at stanford.edu>
>
>Dear Ed,
>
>This is the package which I sent to specmat group. Can you let me know
>if you need anything else.
>
>Thanks
>
>Thulasi Gandhi
>
>
>
>To SpecMat Committee:
>
>We would like to grow Si nanowires using a template process using
>Stanford Nanofabrication facility. The template which we will be using
>is nanoporous alumina template with few nanometers of gold
>electrodeposited into the pores which will act as a catalyst for growth
>of Si nanowires. Since gold is a contamination I would like to request
>you permission to assign a poly furnace for growth of Si nanowires under
>the gold contamination equipment set. I have attached a paper which
>shows the growth process of Si nanowires using a template process using
>gold as a catalyst. If you need any other information, I will be ready
>to provide you.
>
>Thanks
>
>Thulasi Gandhi
>
>1) Contact Information:
>
>DxRay Inc
>19355 Business Center Drive, Suite 10, Northridge, CA-91324 Contact
>Person: Thulasi Gandhi Ph no: 8182800177 ext107 email:tgandhi at dxray.com
>
>2)Material: The Material which we are proposing to use is gold.
>
>3)Process: The process which we will be developing is CVD growth of Si
>nanowires onto a nanoporus alumina template using gold as a catalyst.
>
>4)Quantity: The substrate size is around 1/2" in diameter
>
>5)Storage: There won't be any storage of the substrates at SNF.
>
>6)Disposal: There won't be any disposal of the substrates at SNF.
>
>
>
>-----Original Message-----
>From: Ed Myers [mailto:edmyers at stanford.edu]
>Sent: Monday, January 11, 2010 1:55 PM
>To: Thulasidharan Gandhi
>Subject: RE: Visit to See Silane Setup on 01/06/09
>
>Thulasi Gandhi,
>
>The link is a couple of pages deeper
>
>http://snf.stanford.edu/Materials/NewMatProc.html
>
>Ed
>
>At 01:50 PM 1/11/2010, you wrote:
> >Dear Ed,
> >
> >I checked for the paperwork at the spectmat group, but could not find
> >one. Should I send an email and request them? We want to make sure we
> >get an approval from them before signing in for the training and making
>
> >a open purchase order for using the facility. Can you guide me through
> >on this.
> >
> >Thanks
> >
> >Thulasi Gandhi
> >
> >-----Original Message-----
> >From: Ed Myers [mailto:edmyers at stanford.edu]
> >Sent: Monday, January 11, 2010 1:21 PM
> >To: Thulasidharan Gandhi
> >Cc: specmat at snf.stanford.edu; maurice stevens
> >Subject: RE: Visit to See Silane Setup on 01/06/09
> >
> >Thulasi Gandhi,
> >
> >Yes, we have a poly-silicon furnace plumbed with both dopants.  Right
> >now it is for clean samples, where your sample would be considered gold
>
> >contaminated.  I have copied the specmat group which is responsible for
>
> >any changes to our cleanliness or contamination levels.  To run what
> >you ask, does require this group to assign a poly furnace to the gold
> >contaminated equipment set.  If you want to make this change, you will
> >need to fill out the paperwork starting at
> >http://snf.stanford.edu/Materials/Materials.html
> >
> >Also, there will be a memory effect as you switch dopant gases.  This
> >should be factored in to your process planning.  If you don't remove or
>
> >seal the dopants, you will get a lot of compensated doping and not
> >sharp dopant transitions.
> >
> >Regards,
> >Ed
> >
> >
> >At 11:01 AM 1/11/2010, Thulasidharan Gandhi wrote:
> > >Dear Ed Myers,
> > >
> > >It was nice meeting you the other day and knowing about the research
> > >capabilities you have. We have one final question before we go ahead
> > >with the application for training and using your facility.
> > >
> > >This is what we are planning to do: We are planning to grow Si
> >nanowires
> > >onto alumina template.
> > >
> > >We will have gold deposited into the alumina template and grow the Si
>
> > >nanowires using silane at around 500C. In the growth of Si nanowires
> > >we want to dope phosphor and boron alternatively to grow PN Si
>nanowires.
> > >The other day you told us that your system is capable of doping
> >phosphor
> > >and boron. We want to once again make sure whether it can be done by
> > >switching the gas supply.
> > >
> > >Thanks
> > >
> > >Thulasi Gandhi
> > >
> > >-----Original Message-----
> > >From: Ed Myers [mailto:edmyers at stanford.edu]
> > >Sent: Wednesday, January 06, 2010 7:43 AM
> > >To: Thulasidharan Gandhi
> > >Subject: RE: Visit to See Silane Setup on 01/06/09
> > >
> > >Thulasi Gandhi,
> > >
> > >Yes, I do have to make a change.  Last night I was not by my calendar
>
> > >and I forgot about a 1:30-3pm training I have to provide today.  Can
> > >we meet after 3pm?
> > >
> > >Regards,
> > >Ed
> > >
> > >
> > >At 07:47 PM 1/5/2010, you wrote:
> > > >Dear Ed Myers,
> > > >
> > > >Thats ok. I am not sure whether we can make it before 10 am. So i
> > > >think 1-3 pm should be ok with us. I will meet you tomorrow at 1pm.
> > > >Let me know if there is any changes.
> > > >
> > > >Thanks
> > > >
> > > >Thulasi Gandhi
> > > >
> > > >
> > > >----------
> > > >From: Ed Myers [mailto:edmyers at stanford.edu]
> > > >Sent: Tue 1/5/2010 7:12 PM
> > > >To: Thulasidharan Gandhi
> > > >Subject: Re: Visit to See Silane Setup on 01/06/09
> > > >
> > > >Thulasi Gandhi,
> > > >
> > > >I found out late today, I have to participate in a phone conference
>
> > > >at 11am on Wednesday.  On Wednesday, I have time before 10am or
> > > >between 1-3pm.  Sorry for the late change, but please let me know
> > > >if either of these times will work for you.
> > > >
> > > >Regards,
> > > >Ed
> > > >
> > > >
> > > >At 02:51 PM 1/4/2010, you wrote:
> > > > >Dear Edward Myers,
> > > > >
> > > > >I just spoke to you over the phone about visiting your lab on
> > > > >Wednesday (01/06/09) at 11am. You can email me back the
>directions.
> > > > >
> > > > >Thanks for your help.
> > > > >
> > > > >Regards,
> > > > >
> > > > >Thulasi Gandhi
> > > >
>
>
>
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