This is an absolutely amazing video. You've made something clear to me which my university professors couldn't. Really great job. Thank you. Please make more.
718 views?? Only 718 views??!!! Man, I'm insulted, you are doing an amazing job and get so little attention on YuoTube! Please keep up doing videos, I wish you the best, sincerely. Thank you for the video, I really love how you combine complex physics with charismatic explanation!
Great video! Really helped me understand a topic that I only encountered in my senior level polymer electronics course. 4 years of undergrad EE and this is never mentioned!
This is a very well made video. You did a wonderful job explaining the topic and its applications to our lives. One minor gripe I had though is that the music was sometimes too loud and made it harder to hear what you were saying. I hope any future videos you make have this level of quality
Hello! Thank you so much for watching the video! That’s a really good question! To my understanding (Alex speaking), excitons are not majorona fermions. This is because electrons and holes are both fermions, and when they form an exciton, the net structure becomes a boson. This has some pretty cool implications: like how excitons can form a Bose Einstein condensate when cooled down to low enough temperatures. This has been observed in a few materials and goes by the name ‘Excitonium’ if you wanted to learn more. Unfortunately, the hunt is still out for majorona fermions. I hope this answers your question! 😁 Let me know if not!
Do exitons have anything to do with 1-3 intersystem crossing and other such things? And it also like to relate to semiconductor terminology somehow to normal organic chemistry terminology with homo and lumo, conformational changes and free energy (≠ 0 . energy, like Gibbs)
Thank you so much for the really good question! Sorry it took so long to respond 😅 I don’t know that I’ll have great answers your questions since I am not familiar with ochem, but I’ll give it my best shot. Someone with more knowledge should feel free to reply to this and correct me if I say something stupid. I think one of the biggest differences between electron dynamics in ochem and in semiconductors is how many of them there are. In a single molecule, you could in theory map out all of the allowed electron energy levels and define exactly where everything is. This is much harder to do in semiconductors because there are ~10^23 electrons. A lot of solid state physics is built on some pretty heavy approximations that are only as complicated as they need to be to explain the data. In a very simple model of a semiconductor, electrons have to be in ‘bands’ of allowed energy values. I think the top of the valence band corresponds to homo and to the bottom of the conduction band to lumo. However, excitons live in between these allowed energies. In order to model them, you need to add an attraction term between electrons and holes to the hamiltonian. I’m not sure if there’s an equivalent to this in single molecules. Often the structure of excitons depends heavily on the material it's in. For typical semiconductors, the wave functions take the shape of hydrogen orbitals. (imagine replacing the proton with a positively charged hole/positron, you’d have to switch to center of mass/relative distance frame since the electron and hole have comparable mass) The ground state of the electron hole pair has some ‘binding energy’ relative to the vacuum, which roughly corresponds to an ionization temperature. I also know that more complicated structures can exist between multiple electrons or holes like biexcitons. I don’t think this really answers your question but it’s about as close as I think I can get with my current knowledge 😅 thank you for reaching out! Hopefully I can give you a better answer sometime in the future! - Alex
@@SlightlyProfessional-bt6bi when I knew less I thought I could invent a new organic photovoltaic... , as I learned more I realized how hard it is just to reconcile the vocabulary. Your response was educational and thank you! It also helped me realize that if I go back to trying to better understand the math, that could always be a common ground to translate between the two fields.
Now that you mention it, I totally forgot about organic solar cells. I found an Arxiv on them encase you don’t have institutional access, if you wanted to learn more: arxiv.org/pdf/2007.12734
omg so hole is like another fundamental particle ??!!!???? having its characteristics like somehow electron ??? and even variation of mass charge differ in different material ?????!!!!
Maybe I am not the right audience, but I would really love videos like this to be without all the fake and annoying dramatisation, music and talking as if it was a campfire story. I need to pause and annoyed roll my eyes every 30 seconds. But let my negative comment not be discouragement, majority most like aren't like me. The content is good otherwise.
This is an absolutely amazing video. You've made something clear to me which my university professors couldn't. Really great job. Thank you. Please make more.
Why is this channel yet to be famous? It was educational as well as entertaining at the same time. Well animated. Every part was great.
718 views?? Only 718 views??!!! Man, I'm insulted, you are doing an amazing job and get so little attention on YuoTube! Please keep up doing videos, I wish you the best, sincerely. Thank you for the video, I really love how you combine complex physics with charismatic explanation!
This was a great video! You did an excellent job breaking down a complex topic into understandable parts!
Great video! Really helped me understand a topic that I only encountered in my senior level polymer electronics course. 4 years of undergrad EE and this is never mentioned!
Nice video, great way to introduce the concept of excitons! Hopefully you can make a video on photoluminescence as well.
this video is really helpful and it gave a quick idea of the excitonic evolution.Thank you brother
This is a very well made video. You did a wonderful job explaining the topic and its applications to our lives. One minor gripe I had though is that the music was sometimes too loud and made it harder to hear what you were saying. I hope any future videos you make have this level of quality
Thank you so much for the input! I’ll be sure to lower the volume of the music a little bit in future videos!
This video is so well made! It gave me such a good intuition on what excitons are!
It is impressive how you explained and presented the content. Keep going on and Thank you for your effort.
I love how you explained the science, and the background music was super cool!
One of the best video
wow this was fascinating, very much over my head but rly cool to see! excellent vid quality as well
Thanks. I like your way of explain
Wonderful video. Waiting for more videos like this.
dude why is a video about excitons making me feel moved at 1:30 in the morning
Great video!
This was a great video
omg this is great
please make more videos 🙏🙏🙏
woah. hole rocks
Great video. Good work. Wouldn’t an exciton be the same thing as a Majorana fermion? That’s my understanding. Thanks
Hello! Thank you so much for watching the video! That’s a really good question! To my understanding (Alex speaking), excitons are not majorona fermions. This is because electrons and holes are both fermions, and when they form an exciton, the net structure becomes a boson. This has some pretty cool implications: like how excitons can form a Bose Einstein condensate when cooled down to low enough temperatures. This has been observed in a few materials and goes by the name ‘Excitonium’ if you wanted to learn more. Unfortunately, the hunt is still out for majorona fermions. I hope this answers your question! 😁 Let me know if not!
This was fucking amazing
Do exitons have anything to do with 1-3 intersystem crossing and other such things?
And it also like to relate to semiconductor terminology somehow to normal organic chemistry terminology with homo and lumo, conformational changes and free energy (≠ 0 . energy, like Gibbs)
Thank you so much for the really good question! Sorry it took so long to respond 😅 I don’t know that I’ll have great answers your questions since I am not familiar with ochem, but I’ll give it my best shot. Someone with more knowledge should feel free to reply to this and correct me if I say something stupid.
I think one of the biggest differences between electron dynamics in ochem and in semiconductors is how many of them there are. In a single molecule, you could in theory map out all of the allowed electron energy levels and define exactly where everything is. This is much harder to do in semiconductors because there are ~10^23 electrons. A lot of solid state physics is built on some pretty heavy approximations that are only as complicated as they need to be to explain the data.
In a very simple model of a semiconductor, electrons have to be in ‘bands’ of allowed energy values. I think the top of the valence band corresponds to homo and to the bottom of the conduction band to lumo. However, excitons live in between these allowed energies. In order to model them, you need to add an attraction term between electrons and holes to the hamiltonian. I’m not sure if there’s an equivalent to this in single molecules.
Often the structure of excitons depends heavily on the material it's in. For typical semiconductors, the wave functions take the shape of hydrogen orbitals. (imagine replacing the proton with a positively charged hole/positron, you’d have to switch to center of mass/relative distance frame since the electron and hole have comparable mass) The ground state of the electron hole pair has some ‘binding energy’ relative to the vacuum, which roughly corresponds to an ionization temperature. I also know that more complicated structures can exist between multiple electrons or holes like biexcitons.
I don’t think this really answers your question but it’s about as close as I think I can get with my current knowledge 😅 thank you for reaching out! Hopefully I can give you a better answer sometime in the future!
- Alex
@@SlightlyProfessional-bt6bi when I knew less I thought I could invent a new organic photovoltaic... , as I learned more I realized how hard it is just to reconcile the vocabulary.
Your response was educational and thank you!
It also helped me realize that if I go back to trying to better understand the math, that could always be a common ground to translate between the two fields.
Now that you mention it, I totally forgot about organic solar cells. I found an Arxiv on them encase you don’t have institutional access, if you wanted to learn more: arxiv.org/pdf/2007.12734
@@SlightlyProfessional-bt6bi thank you, I'll check it out!
Absorption Spectrum at 6:10 is only true when Temperature
This is really cool! Thank you for the input!! 😁 I can add this to the notes in the description
omg so hole is like another fundamental particle ??!!!???? having its characteristics like somehow electron ??? and even variation of mass charge differ in different material ?????!!!!
Poggers
Maybe I am not the right audience, but I would really love videos like this to be without all the fake and annoying dramatisation, music and talking as if it was a campfire story. I need to pause and annoyed roll my eyes every 30 seconds.
But let my negative comment not be discouragement, majority most like aren't like me. The content is good otherwise.