Chinese Academy of Sciences, Changchun should be Liu groups: high temperature can develop an organic solar cell

The solar cell is a clean inexhaustible energy, in space, the solar cell needs to withstand high temperatures (100-200 ℃). Suitable conventional solar cell at or below 80 ^o C under work, is not suitable for working at high temperatures. For example, a silicon solar cell efficiency at a high temperature severe attenuation, the perovskite active material for a solar cell light unstable at high temperature, the organic photoactive layer of the solar cell morphology difference stability at high temperatures, the conventional solar cell limits job stability in high temperature environment. Recently, Changchun Institute of Applied Chemistry Liu team to develop organic solar cells can work at 150 ℃, photovoltaic technology to work under extreme conditions to develop a new direction. The organic solar cell having flexibility, light weight advantage, the organic solar cell is generally a polymer blend of donor material and acceptor material is a small molecule as an active layer. In previous work, Liu TF develop small molecule-based donor material and an acceptor material is a polymer organic solar cells, organic solar cells and found that such a very excellent thermal stability (Nat.Commun., 2019, 10, 3271). Recently, they developed a new type of small molecule organic boron donor material and a nitrogen coordinate bond acceptor polymer material, two material itself has a very good phase stability, 20-220 ^{o [ 123] no phase transition} within the C range. Blending these two materials as a photoactive layer, to obtain an organic solar cell The energy conversion efficiency of 9.5% , a small molecule is the donor / acceptor type organic polymer solar cell efficiency is the highest value. More importantly, the battery in the 150 o ^{C under continuous operation 72 hours} , still maintained 84% of initial efficiency, at a high temperature exhibits excellent stability . More recent studies published in the \”Journal of Materials Chemistry A\” . The first author of the paper for the Chinese Academy of Sciences, Changchun should be doctoral seedlings Junhui , Chinese Academy of SciencesChangchun should be of the Liu Meng Bin, researcher and associate researcher as a co-corresponding author of the paper.