From 66c93c7fb010ea6b579efdb41d1cc54d4afb3dc0 Mon Sep 17 00:00:00 2001
From: Anton Akhmerov <anton.akhmerov@gmail.com>
Date: Thu, 11 Apr 2019 07:28:20 +0000
Subject: [PATCH] typo fix

---
 src/14_doping_and_devices.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/14_doping_and_devices.md b/src/14_doping_and_devices.md
index 54871e9c..7772e017 100644
--- a/src/14_doping_and_devices.md
+++ b/src/14_doping_and_devices.md
@@ -86,7 +86,7 @@ $$n_e - n_h + n_D - n_A = N_D - N_A$$
 
 We already know $n_e$ and $n_h$.
 
-$$n_D = N_D \frac{1}{e^{(E_D-E_F)/kT} + 1}, n_A = N_A \frac{1}{e^{-(E_A+E_F)/kT} + 1}$$
+$$n_D = N_D \frac{1}{e^{(E_D-E_F)/kT} + 1}, n_A = N_A \frac{1}{e^{(E_F-E_A)/kT} + 1}$$
 
 Simplification:
 
-- 
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