I am trying to; as an interested civilian. But I am real interested.
My 207 nm wavelength appears to have been superseded by 222 nm. I have found nothing in LEDs that hit that wavelength. Some esoteric (read hard and expensive) approaches exist. Taking a blue laser and hitting a crystal that acts as a frequency doubler can hit 222 nm on the nose.
I have a high probability of needing some significant surgery. After researching infection rates; I am not comforted. 10% overall, and of those seriously diminishing survival. I have been warned by a surgeon, success rate probably lower than that for my requirements. Biggest impact is hospital "improved" antibiotic immune pathogens. I can't control the operating theater, but the projected 5 - 7 days in the hospital are ripe for infection. Hence, I want to build one of the UVC devices. Preferably something along the lines of a flashlight. I can keep that in my room and clean up my person and personal space periodically. And, if the opportunity exists, I can use it at home. Flu and pretty much everything else is killed. Airborne and surface pathogens. Massively superior to the little alcohol squirters. Incredible business opportunities.
I have found a source that seems to work. It is a KrCl light source. With, I believe, a built in filter that gets rid of any spurious emissions. They have a development kit and a picture with little information. They are probably holding things close to the chest waiting to start selling systems when the FDA approves things (apparent estimate, 2+ years). Their power supply in the kit is of a size that may be workable with a single light source, some Li batteries, and maybe a different approach to generating the high voltage needed. One light source should be enough for my purpose. But they will not sell me a kit.
I appear to be at the end of my attempt. One company showed a large and clumsy line operated hand held sterilizer, but it did not appear to be for sale. Unlikely to be acceptable in my room.
It is unfortunate it takes so long for moving through the government process. This stuff is essentially magic. Old, but relevant, quote "Technology sufficiently advanced is indistinguishable from magic". It kills everything and harms no one. They could have a real opportunity to fast track the technology to save lives by eliminating infections and massively lower costs for treating infections that could be avoided. Billions$
Any suggestions welcomed.