Right now EMM Hope, Tiangwen-1 and Mars2020 are on their way to Mars and ExoMars will go next time.
For these four spacecraft how many of them have any provisions to use solar power via photovoltaic panels during transit?
I know that Mars2020 will primarily use the Perseverance rover's RTG for electrical power but I don't know for a fact yet that there is zero photovoltaic power capability during spaceflight.
As far as the other three are concerned, I'm sure at least some do.
If there is solar power used during launch or insertion into the interplanetary trajectory, that will be interesting to know about, but my question is primarily about the long interplanetary voyage.