diff --git a/src/13_semiconductors.md b/src/13_semiconductors.md
index 19b5690f9762eda285def8bd12e295dd0f6a75a4..9de6f0daf3f2f7fc0424c1f69475b5fc190dbf03 100644
--- a/src/13_semiconductors.md
+++ b/src/13_semiconductors.md
@@ -39,6 +39,10 @@ _(based on chapters 17–18 of the book)_
     - Compute the density of states of electrons in semiconductors
     - Compute the density of charge carriers and chemical potential as a function of temperature
 
+??? info "Lecture video"
+
+    <iframe width="100%" height="315" src="https://www.youtube-nocookie.com/embed/Or50p4-HRiA" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
 ## Review of band structure properties
 
 * Group velocity $v=\hbar^{-1}\partial E(k)/\partial k$