Arsenal will face Chelsea or Eintracht Frankfurt in the Azeri capital Baku on May 29.
What are they saying?
"I think we played a very good first half. Then in the first part of the second half, we went in trouble. We were passive in the defensive phase, so we conceded the goal, 10 minutes of panic.
"Better in the last part of the match, then in the extra-time, I think we were really tired - after 60 matches to play 120 minutes it's really very difficult and we were unlucky during the match because we lost (Andreas) Christensen, we lost (Ruben) Loftus-Cheek.
"We started the match with three injuries and two injuries during the match, it's not easy but in the end, we can play the final."
"I am proud of them," Emery replied when asked about the impact of Aubameyang and Lacazette.
"Big players can be good strikers but when their commitment is like today, defensively also, to work to help us, it is amazing.
"Each match is different and I think today we showed everybody our character, and also our capacity to be together and struggle in some moments defensively, but also having good moments in attack.