Brazilian superstar Neymar said he came to Paris Saint-Germain for a "bigger challenge" in his first public comments since arriving in the French capital on Friday.

The 25-year-old, who signed the biggest transfer deal in world history to join PSG from Barcelona for 222 million ($264m), said it had been a tough call.

"It was one of the toughest decisions of my life," he told a press conference at PSG's headquarters. "I wanted a new challenge. I wanted something bigger. To do my best. And to do even better."

Neymar's wages will reportedly triple to 30 million euros ($35.5 million) a year after tax at PSG but the Brazil captain said he was fired up by ambition for more success, not by money.

And PSG president Nasser Al-Khelaifi said Neymar shared the club's hunger for titles and trophies rather than financial rewards.

"He did not come here for the money. If he was motivated by money he could have got more somewhere else," he said.

Neymar has signed a five-year deal with the fee -- which corresponded to the player's buyout clause at Barcelona -- more than double the previous world record transfer.

Manchester United held the previous record when they bought Paul Pogba from Juventus last year for 105 million euros.

Neymar won the Champions League in 2015 with Barcelona and collected two Spanish league titles and three Copas del Rey in his four seasons at the Camp Nou.

He has scored 52 goals in 77 appearances for his country.