What is the latest research in the science of Solar cell?

Plenty of New research are going out in the field of nanotechnology for soalr cell . 
new research are  inverted solar cell which make solar cell more efficient more effective .
Inverted soalr cell help to procude more power and add more life to it with the help of Nano technology.
   

Changes at the atom level in nanowires offer vast possibilities for improvement of solar cells and LED light.

photovoltaic and coating cells with dyes  in nano scale

I heard something about the latest research in MIT about surpassing the Shockley-Queisser efficiency limit of 34%.
The question is too vague and i'll advise you search the internet.
You can browse the IEEE Journals, or try to google it.

With the aid of nanotechnology, Yu can't ask about the latest research.
While I'm writing this, there are many researches being puplished around the world.
They are working every second trying to improve the low efficiency of solar cells.
The latest one that I've read was about raising the efficiency to about45%.
Isn't that awesome!