urface of a pipe to have a layer like
100~1000µm? What will be the behaviour with heating/cooling cycles over time.
From: MSF
Sent: 22 December 2022 02:23
To: vortex-l@eskimo.com
Subject: RE: [Vo]:Solar cell lifetime in space
I'm not sure of the actual crystalline structure, but it's no
> Subject: Re: [Vo]:Solar cell lifetime in space
>
> I was working with this method of surface treatment of glass more decades ago
> than I care to remember. You simply immerse ordinary glass into a bath of
> molten potassium nitrate and the sodium Ions at the surface are replaced
What is the crystal structure of the adhered layer ? Amorphous (sort of silica
gel) or crystallized (crystalline quartz) ?
From: MSF
Sent: 21 December 2022 00:00
To: vortex-l@eskimo.com
Subject: Re: [Vo]:Solar cell lifetime in space
I was working with this method of surface treatment
Interesting... But I can't believe it took so long to get around to what should
have been obvious.
--- Original Message ---
On Wednesday, December 21st, 2022 at 12:07 AM, Andrew Meulenberg
wrote:
> Things have gone beyond simple UV protection. At a quick glance, I found this
> from
In reply to MSF's message of Tue, 20 Dec 2022 22:59:35 +:
Hi Michael,
>I recently discovered a method of depositing a layer of silica on any given
>surface using a ridiculously simple and inexpensive technique. This is
>something that should have been discovered 200 or so years ago, but
Things have gone beyond simple UV protection. At a quick glance, I found
this from 2014:
"Ion exchange doping of solar cell coverglass for sunlight down-shifting"
I was working with this method of surface treatment of glass more decades ago
than I care to remember. You simply immerse ordinary glass into a bath of
molten potassium nitrate and the sodium Ions at the surface are replaced with
potassium ions, resulting in a highly impact resistant glass.
onger know).
Andrew
-- Forwarded message -
From: MSF
Date: Tue, Dec 20, 2022 at 1:23 PM
Subject: Re: [Vo]:Solar cell lifetime in space
To:
I guess this is getting off into the weeds a bit, but is the quartz layer
doped with cerium in the mass? Or is the cerium diffused into t
In reply to Andrew Meulenberg's message of Mon, 19 Dec 2022 20:26:52 -0600:
Hi Andrew,
Thanks for the info. It's nice to have comment from an "insider". :)
>Robin,
>
>The whole deal is a set of tradeoffs that depends on the environment to be
>encountered. At some altitudes, the Van Allen Belts
I guess this is getting off into the weeds a bit, but is the quartz layer doped
with cerium in the mass? Or is the cerium diffused into the surface by
immersion in a molten cerium compound?
--- Original Message ---
On Tuesday, December 20th, 2022 at 2:26 AM, Andrew Meulenberg
wrote:
Robin,
The whole deal is a set of tradeoffs that depends on the environment to be
encountered. At some altitudes, the Van Allen Belts have too much
penetrating radiation to allow solar cells to be used for long-term
missions.
Addition of coverslides makes the solarcell assembly vulnerable to
In reply to Andrew Meulenberg's message of Mon, 19 Dec 2022 00:25:20 -0600:
Hi Andrew,
I'm sure it does, however the high energy particles from other sources are also
present, so it seems to be fairly
effective against them too? Otherwise surely it would have been noticed that
cells in space
Robin,
This thickness of coverslide stops the low-energy trapped protons of the
Van Allen belts that would cut the cell efficiency by ~30% in not too many
months.
Andrew
On Sun, Dec 18, 2022 at 6:38 PM Robin
wrote:
> Hi,
>
> ESA apparently place a 0.1 mm layer of glass before their solar
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