The development of robust and inexpensive light harvesting material systems that operate at high efficiency are needed to make the direct solar-to-fuel energy conversion by photoelectrochemical (PEC) or heterogeneous photocatalytic (PC) approaches economically viable. In this presentation the technology of direct solar-tofuel energy conversion is introduced and our laboratory’s progress in the development new light absorbing materials and co-catalysts will be discussed along with the application toward overall solar water splitting systems. Specifically, the
application of pi-conjugated organic semiconductors, which is an emerging trend,[1] will be discussed in the context of their stability[2] and coordination to the metal-based electrocatalysts required to turn over the kinetically challenging oxygen and hydrogen evolution reactions. An outlook on employing organic based semiconductor systems
in comparison to their inorganic counterparts will be presented with respect to the possible economic viability of this technology.
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References:
[1] L. Yao, A. Rahmanudin, N. Guijarro, K. Sivula, Adv. Energy Mater. 2018, 8, 1802585.
[2]L. Yao, N. Guijarro, F. Boudoire, Y. Liu, A. Rahmanudin, R. A. Wells, A. Sekar, H.-H. Cho, J.-H.
Yum, F. Le Formal, K. Sivula, J. Am. Chem. Soc. 2020, 142, 7795.