The use of Bio-photonic systems has attracted a lot of attention recently specially in the field of solar energy conversion and photovoltaic materials the use of photosynthetic organs of plants is very promising. The energy conversion in the process of photosynthesis is close to 100% and it’s environmental compatibly are the main reasons for why photosynthesis has attracted the attention of energy system designers and researchers. The way of solar energy conversion in photosynthesis indicates a great potential as a fount of renewable energy. Use of the photosynthetic components in photosensors and photovoltaic devices solitarily, has disadvantages such as low extracted current compared to other kinds of photovoltaic materials. Accordingly, for more useful and better application, these photosynthetic components could be used as the optimizer of the other species of photovoltaic materials and solar cells. photosystem1 protein complex, which is the main member of photosynthetic components has maximum absorption spectrum wavelength at 430nm and 665nm. Therefore, it can be an appropriate complement for polymeric solar cells with their absorption spectrum at the green wavelength region. In this paper we have used the photosystem1 protein complex in the inverted polymer solar cell with structure of ITO/P3HT:ICBA/PS1/Al and positive results have been observed. So that the polymer solar cells efficiency was enhanced from 4.3% to 4.53%.

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Organic Light Emitting Diodes (OLEDs) have developed to show many advantageous and noticeable properties including their flexibility, easy processing, very cost effective chemical technology, and easy combining of organic material, hence having optimized performance is very significant. Therefore, we have to find new methods in order to be able to use the total singlet and triplet excitons population and to achieve 100% internal efficiency. If we can extend the internal efficiency to 100%, this will lead to efficient production of OLEDs in the industry. In this work, to consider increasing excitons’ population, we have worked on the uniformity of the Electron Transport Layer (ETL) and Emissive Layer (EL) by applying argon atmosphere pressure cold jet plasma. Examining the experimental data in comparison with the theoretical data has shown us that having a better uniformity in barriers (based on AFM images) and decreasing contact angle will lead to a better injection and more exciton's population leading to an increase in the internal efficiency.