From adeae2e2b68c4867f51f0b2cf1e677b0e7d74248 Mon Sep 17 00:00:00 2001 From: Thomas Bredewoud <t.p.bredewoud@student.tudelft.nl> Date: Thu, 11 May 2023 14:17:37 +0000 Subject: [PATCH] Update 14_doping_and_devices_solutions.md --- docs/14_doping_and_devices_solutions.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/14_doping_and_devices_solutions.md b/docs/14_doping_and_devices_solutions.md index 41a285a..37c4b54 100644 --- a/docs/14_doping_and_devices_solutions.md +++ b/docs/14_doping_and_devices_solutions.md @@ -27,7 +27,7 @@ $$ n_e - n_h + n_D - n_A = N_D - N_A $$ Since $E_G \gg k_B T$, we can only use the law of mass action. But the question offers us another piece of information - we are around $|N_D-N_A| \approx n_i$. That means that we are near the transition between extrinsic and intrinsic regimes. -Because the dopants stop being ionized at very low temperatures (see next exercise), we can neglect $n_D$ and $n_A$ in this exercise, just like in the lecture. +In this regime we can neglect $n_D$ and $n_A$ in this exercise, just like in the lecture. Writing $n_e n_h = n_i^2$ and $n_e - n_h = N_D - N_A$ and solving these together, we obtain \begin{align} -- GitLab