Dispersibility and rheological behavior of functionalized silica nanoparticles as lubricant additives

Synthesis and wear behavior of oleic acid capped calcium borate/graphene oxide composites

Utilizing non-conjugated small-molecular tetrasodium iminodisuccinateas electron transport layer enabled improving efficiency of organic solar cells

A new alcohol-soluble polymer PFN-ID is successfully synthesized by combining N,N-di(2-ethylhexyl)-6,6′-dibromoisoindigo and an amino-containing fluorene subunits, and applied to polymer solar cells (PSCs) with PTB7-Th:PC71BM as an active layer. The n-type backbone of the PFN-ID improves electron transfer performance and thus optimizes device performance. The PSCs with PFN-ID as cathode interfacial layers (CILs) have significantly improved compared to the device without the interface layer, especially the optimum power conversion efficiency (PCE) of PSCs reaches up to 9.24%, which is 1.62 times higher than that of devices without CILs. The I–V curves show that the introduction of the n-type backbone leads to a significant increase in the conductivity of PFN-ID compared to PFN. The UV photoelectron spectroscopy and Mott–Schottky curves further confirm that PFN-ID can decrease the work function of Al electrode, and increase its built-in potential, giving higher open-circuit voltage. The resulting conventional PSCs using PFN-ID as cathode interlayer achieve high photovoltaic performance, and the research results can provide a new strategy for the advancement of PSCs. 

A New alcohol‐soluble polymer PFN‐ID as cathode interlayer to optimize performance of conventional polymer solar cells by increasing electron mobility

Improved Performance of Organic Solar Cells by Utilizing Green Non‐halogen Additive to Modulate Active Layer Morphology

A ternary strategy of halogen-free solvent processing can open up a promising pathway for the preparation of polymer solar cells (PSCs) on a large scale and can effectively improve the power conversion efficiency with an appropriate third component. Herein, the green solvent o-xylene (o-XY) is used as the main solvent, and the non-fullerene acceptor Y6-DT-4F as the third component is introduced into the PBB-F:IT-4F binary system to broaden the spectral absorption and optimize the morphology to achieve efficient PSCs. The third component, Y6-DT-4F, is compatible with IT-4F and can form an "alloy acceptor", which can synergistically optimize the photon capture, carrier transport, and collection capabilities of the ternary device. Meanwhile, Y6-DT-4F has strong crystallinity, so when introduced into the binary system as the third component can enhance the crystallization, which is conducive to the charge transport. Consequently, the optimal ternary system based on PBB-F:IT-4F:Y6-DT-4F achieved an efficiency of 15.24%, which is higher than that of the binary device based on PBB-F:IT-4F (13.39%).

San-ming Du

Papers

Two Compatible Acceptors as an Alloy Model with a Halogen-Free Solvent for Efficient Ternary Polymer Solar Cells.

Utilizing non-conjugated small-molecular tetrasodium iminodisuccinateas electron transport layer enabled improving efficiency of organic solar cells

A New alcohol‐soluble polymer PFN‐ID as cathode interlayer to optimize performance of conventional polymer solar cells by increasing electron mobility

Improved Performance of Organic Solar Cells by Utilizing Green Non‐halogen Additive to Modulate Active Layer Morphology

Simultaneously enhancing the performance and mobility of organic solar classical systems by a novel additive