Greetings,

I intend to deduce solar-to-hydrogen efficiency (STH) following expression:

STH = [Jsc x 1.23 x nF]/P in which Jsc is short-circuited photocurrent density at zero bias condition. Also, IPCE at zero bias is to estimate the maximum possible STH.

I'm lost on how to obtain the value of Jsc through Metrohm lab potentiostat manipulated by Nova 2.1 software in our lab.

1/ I plan to set up a 2-electrode system with a working electrode and a counter electrode (connected with CE and RE cables simultaneously), then apply 0V, illuminate solar light, and record photocurrent.

But, I do not know which technique I should perform to record the photocurrent. I reckon chronoamperometry potentiostatic or linear sweep voltammetry.

2/ Is it possible to run on a 3-electrode system as well? In this case, the bias is the difference between WE and RE, not CE. Is there any pitfalls?

I am a novice so I appreciate all your share.

Thank you very much