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The intrinsic stability of the acceptor is a crucial component of the photovoltaic device stability. In this study, we investigated the efficiency and stability of the nonfused-ring acceptors LC8 and BC8 under indoor light conditions. Interestingly, we found that devices based on BC8 with terminal side chains exhibited a higher indoor efficiency and stability. Through accelerated aging experiments, we discovered that the acceptors generate singlet oxygen under light exposure with BC8 demonstrating lower levels of ROS compared to LC8. We attribute this difference to the modulation of the acceptor aggregation orientation. Furthermore, the generated reactive oxygen species (ROS) further deteriorate the acceptor structure, and this phenomenon is also observed in high-efficiency acceptor structures, such as Y6. Our research reveals important mechanisms of acceptor photo-oxidation processes, providing a theoretical basis for enhancing the intrinsic stability of acceptors.

For providing refer to the experimental data of artificial floating island in river north, this study will get stability characteristics of artificial floating islands displacement pile fixation on simulating the impact of different flow rate of water. Analysising physical stress of artificial floating island displacement pile fixation and simulation, result shows that the sum of floating island of buoyancy and the maximum force of two fiber rope in the vertical direction should be greater than the maximum gravity of the floating island plants and ensure the maximum force of the two fiber rope in the horizontal direction must be greater than the flow momentum, the quality of floating island can be increased for improving stability. Depend on the different flow of water and linear regression equation, the distance between the floating island should be arranged reasonably.

For the purpose to provide a reference for ecological floating island construction of Liao river, this paper simulated different flow velocity to research the stability of floating island with different fixation methods based on the actual hydrological data of Liao river at the comprehensive experimental base of Shenyang agricultural university. Results show that the stability of floating island with different fixation methods under different flow velocity have significant difference. The data of longitudinal displacement shows the stability of staking floating island is best, the following one is cableway and the sinker is worse. The data of lateral displacement shows the stability of cableway floating island is best, the following one is staking and the sinker is worse. The data of vertical floating displacement shows the stability of cableway floating island is best, the following one is sinker and the staking is worse. Comprehensively, the stability of cableway floating island is best, staking is better and the sinker is less stable. Consequently, this study recommended the cableway and staking floating island as the ideal types in experimental construction in Liaohe river.