Does a wide bandgap JFET glow under forward bias?...

[George Herold]

On Saturday, September 19, 2020 at 8:30:09 AM UTC-4, Arie de Muynck wrote:

On 2020-09-18 21:03, Dmitriy Pshonkin wrote:
https://www.researchgate.net/publication/327860836_Investigating_SiC_MOSFET_body_diode\'s_light_emission_as_Temperature-Sensitive_Electrical_Parameter

Measuring the photo current, and then displaying the value in mV?

The forward voltage of the photo diode will be very depending on
temperature (threshold, leakage will vary). The diode is placed on top
of the FET gel, so it\'s temperature will also have varied.

Apart from the fun fact that light has been observed, this research is
practically useless.

It should be mandatory to add a well-qualified electronics engineer to
scientific teams dabbling with electronics. And to review teams.

Arie

Sure, everything is a function of temperature.
I didn\'t know SiC forward biased was an led...
but indirect, so not so good efficiency.

George H.

 

[Bill Sloman]

On Sunday, September 20, 2020 at 1:02:56 AM UTC+10, jla...@highlandsniptechnology.com wrote:

On Sat, 19 Sep 2020 14:19:17 +0200, Arie de Muynck
no....@no.spam.org> wrote:

On 2020-09-18 21:03, Dmitriy Pshonkin wrote:
https://www.researchgate.net/publication/327860836_Investigating_SiC_MOSFET_body_diode\'s_light_emission_as_Temperature-Sensitive_Electrical_Parameter

Measuring the photo current, and then displaying the value in mV?

The forward voltage of the photo diode will be very depending on
temperature (threshold, leakage will vary). The diode is placed on top
of the FET gel, so it\'s temperature will also have varied.

Apart from the fun fact that light has been observed, this research is
practically useless.

It should be mandatory to add a well-qualified electronics engineer to
scientific teams dabbling with electronics. And to review teams.

No, that would remove the substantial amusement available from many
scientific papers.

Worse, it would stop the graduate students from using quick and dirty solutions that only work because you\'ve got a graduate student to use as part of the control loop. The net result would be that rather less scientific research would get done - what was done would be a bit more reliable, but there\'s no strong correlation between the quality of the electronics and the significance of the results obtained, so you end up with a net loss.

--
Bill Sloman, Sydney

 

[Tim Williams]

\"John S\" <Sophi.2@invalid.org> wrote in message
news:rk0ufg$bri$1@dont-email.me...

Nuts do it as well, so why shouldn\'t a JFET?

https://i.imgur.com/WxqQIEB.jpg


Ohhhh, you didn\'t mean peanuts or gonads, it seems.

Well, those too. True fact: the human body glows, imperceptibly but only
just barely so, in deep red. As I understand it, you can\'t see it with dark
adapted eyes, but it doesn\'t take much better of a camera to see it. Cause
is singlet oxygen species -- in short, metabolism. The same emission when
30% hydrogen peroxide and high strength bleach are mixed (at which
concentration it is visible).

Tim

--
Seven Transistor Labs, LLC
Electrical Engineering Consultation and Design
Website: https://www.seventransistorlabs.com/

 

[Tim Williams]

Yellow. This guy\'s photographing dies (mostly old and metal can parts) and
avalanching many of them:
https://www.richis-lab.de/Bipolar07.htm

Tim

--
Seven Transistor Labs, LLC
Electrical Engineering Consultation and Design
Website: https://www.seventransistorlabs.com/

\"John Larkin\" <jlarkin@highland_atwork_technology.com> wrote in message
news:3h77mfdafenetfvm3s31qjb88bpl55plsd@4ax.com...

On Tue, 15 Sep 2020 15:27:38 -0500, \"Tim Williams\"
tiwill@seventransistorlabs.com> wrote:

Yes.
https://www.eevblog.com/forum/projects/transistors-die-pictures/msg3234138/#msg3234138

Tim

I recall pictures of bipolar transistors emitting weak white light.
Pease?