Tuchel was unveiled to the media at the Parc des Princes on Sunday evening, after his appointment on a two-year deal was confirmed last week.
He will officially begin his new job in time for the start of pre-season training in July as he replaces Unai Emery, but the German has already met with Neymar.
"I met him last Sunday and it was a very good meeting. He's an artist, an exceptional player, one of the best in the world," said Tuchel, who was previously in charge at Borussia Dortmund but left a year ago and had been a free agent since.
"Artists are special players, they need special treatment, it's common sense."
Neymar joined PSG last August from Barcelona for a world-record fee of 222 million euros ($264 million).
He won the French player of the year prize despite a foot injury meaning he has not featured for his club since the end of February.
There has been constant speculation that the 26-year-old's stay in Paris could be a short one, with Real Madrid linked to a move for the Brazilian star.
But PSG president Nasser Al-Khelaifi has vehemently denied any suggestion that Neymar will depart after just one year in Ligue 1.
Tuchel added: "I met a very friendly, very open guy for the first time. We started talking about soccer and I saw a smile on his face and that is what I want to see.
"If we find a way to build a structure around him, so he can show all his talent on the pitch, I think we have a key player to win our games."