Photosystem II in bio-photovoltaic devices

Area of Science:

• Bio-photovoltaics
• Photosystem II (PSII) complexes
• Hybrid photoelectrodes

Background:

• Growing interest in hybrid bio-based devices for sustainable applications.
• Photosystem II (PSII) complexes are key for water oxidation in bio-hybrid systems.
• Historical context: early photoelectricity from bacterial reaction centers (1 nA cm⁻²).

Purpose of the Study:

• Summarize recent advancements in hybrid devices utilizing Photosystem II (PSII).
• Highlight the potential of PSII for photoelectricity generation, hydrogen production, and herbicide detection.
• Review advantages, disadvantages, and future directions for PSII-inspired bio-photovoltaic devices.

Main Methods:

• Review of recent scientific literature on hybrid bio-photovoltaic devices.
• Focus on the integration of Photosystem II (PSII) complexes into photoelectrochemical systems.
• Analysis of photocurrent generation and stability in PSII-based devices.

Main Results:

• Significant progress in PSII-based solar cells, achieving stable currents up to 888 μA cm⁻² (Guzel et al., 2020).
• Demonstration of PSII's capability to utilize water for electron generation.
• Comparison of current performance with historical photocurrent data from early bio-photoelectric systems.

Conclusions:

• Hybrid devices based on Photosystem II (PSII) show immense promise for renewable energy and sensing.
• Continued research is essential to overcome limitations and optimize PSII-inspired bio-photovoltaic technologies.
• The review provides insights into the trajectory and future potential of these advanced bio-hybrid systems.