Hollande made the call on a visit to South Korea, the first by a French head of state in 15 years, where he is looking to bring Seoul on board as a "very useful" ally in securing a global climate deal in Paris next month.
He flew to South Korea after a visit to China, where he reached what he described as a "historic" agreement that the international deal on tackling climate change to be negotiated in Paris should include checks on compliance.
At a climate change and green growth round table in Seoul, Hollande stressed the critical importance of sharing emissions-cutting technology with emerging countries like India and China.
"It's not just about fixing norms and limits, but also about taking a big technological leap, and not being scared to share technology," he said.
More From This Section
"To my mind, that is what will decide success or failure," he added.
The world's nations have been arguing for more than two decades over how to share the burden of cutting carbon emissions.
Hollande is hoping South Korea will play the role of facilitator in getting the Paris agreement signed.
South Korea hosts the Green Climate Fund - the global fund created to spearhead climate change financing - and is seen as a key go-between in negotiations on whether developed or developing countries should bear more of the burden for reducing emissions.
The French president said the negotiations would begin before the Paris conference, with leaders of the G20 group of leading industrialised and emerging economies due to meet next week at a summit in Turkey.
"South Korea is heavily involved in preparations for the Paris meeting and will have a very useful role to play in the whole process," he added.