廖良生教授课题组
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李述汤院士、廖良生教授应邀

Nature Reviews Materials撰写评论文章


  

  近日,李述汤院士、廖良生教授应邀为《Nature Reviews Materials》撰写的评论文章“Materials science in China”(Nat. Rev. Mater., 2016, 1, 16025.)正式在线发表。这是我院也是苏州大学的科研人员首次在“Nature Reviews”系列期刊上发表评论文章(第一单位,第一作者)。

 《Nature Reviews Materials》Nature出版集团继《Nature Reviews Cancer》(IF=37.4)、《Nature Reviews Drug Discovery》(IF=41.908)、《Nature Reviews Molecular Cell Biology》(IF=37.806)等系列综述期刊后,于今年创刊的材料科学领域首个综述性期刊。该期刊专门发表材料科学与技术领域的综述、展望与评论文章。据悉,该期刊中的评论文章旨在针对材料科学领域的热点问题和发展趋势提出权威性见解。

  进入本世纪以来,中国经济不断强大,使得世人对中国材料科学与技术的发展给予了越来越多的关注。此次李述汤院士和廖良生教授应邀针对我国材料科学15年来的发展状况,从优势、挑战和展望三方面进行了精辟论述,认为我国高瞻远瞩的科研政策、不断完善的研究平台、高层次的人才计划以及庞大的国内市场是中国材料科学与技术近年来飞速发展的推动力;并且相信我国材料科技人员终将站在世界科技前沿,为我国乃至世界的经济发展做出重要贡献。通过 《Nature Reviews Materials》 这一重要窗口在科学界向世人介绍中国材料科学与技术的发展,具有重要意义。


文章链接http://www.nature.com/articles/natrevmats201625


Highlight

我组李永玺博士后在近期出版的Energy& Environmental Science发表题为A near-infrared non-fullerene electron acceptor for high  performance polymer solar cells的文章,并被选为Hot Paper。同时,李永玺博士后的工作得到了化学资讯平台X-MOL的报道(报道链接)。

摘要                                

Low-bandgap polymers/molecules are an interesting family of semiconductor materials, and have enabled many  recent exciting breakthroughs in the field of organic electronics, especially for organic photovoltaics (OPVs). Here, such a low-bandgap (1.43 eV) non-fullerene electron acceptor (BT-IC) bearing a fused 7-heterocyclic ring with  absorption edge extending to the near-infrared (NIR) region was specially designed and synthesized. Benefitted  from itsNIR light harvesting, high performance OPVs were fabricated with medium bandgap polymers (J61 and J71) as donors, showing power conversion efficiencies of 9.6% with J61 and 10.5% with J71 along with extremely low energy loss (0.56 eV for J61 and 0.53 eV for J71). Interestingly, femtosecond transient absorption spectroscopy studies on both systems show that efficient charge generation was observed despite the fact that the highest occupied molecular orbital (HOMO)–HOMO offset (ΔEH) in the blends was as low as 0.10 eV, suggesting that such a  small ΔEH is not a crucial limitation in realizing high performance of NIR non-fullerene based OPVs. Our results  indicated that BT-IC is an interesting NIR non-fullerene acceptor with great potential application in tandem/multi-junction, semitransparent, and ternary blend solar cells.

文章链接http://pubs.rsc.org/en/Content/ArticleLanding/2017/EE/c7ee00844a#!divAbstract

新闻动态

我组李永玺博士后在EES上发表封面论文


  李永玺博士后在Energy & Environment Science上发表题为"Non-fullerene polymer solar cells based on a selenophene-containing fused-ring acceptor with photovoltaic performance of 8.6%"的论文,该论文被选为当期的封面论文


摘要:

In this work, we present a non-fullereneelectron acceptor bearing a fused five-heterocyclic ring containing seleniumatoms, denoted as IDSe-T-IC, for fullerene-free polymer solar cells (PSCs).This molecule exhibits a low band gap (Eg = 1.52 eV), strong absorption in the 600–850 nm region and a high LUMO level (_3.79 eV). When a large band gappolymer J51 (Eg = 1.91 eV) was used as the donor, complementary absorption ofthe polymer donor and acceptor was obtained in the wavelength range of 350–850nm. The solar cell based on J51:IDSe-T-IC gives a maximum PCE of 8.6%, with ahigh Voc of 0.91 V, a Jsc of 15.20 mA cm_2 and a fill factor (FF) of 62.0%.Moreover, this performance is much higher than that of J51:PC71BM based PSCsunder similar device fabrication conditions (PCE = 6.0%). The trade-off featuresof the Jsc and Voc existing in PSCs with fullerene acceptors have beenminimized in the fullerenefree PSCs based on IDSe-T-IC and J51. The resultsdemonstrate that fine-tuning the absorption and electronic energy levels ofnon-fullerene acceptors, and properly selecting a polymer donor to achievecomplementary absorption, is a promising way to further improve the performanceof the PSCs.

文章链接http://pubs.rsc.org/en/content/articlelanding/2016/ee/c6ee00315j#!divAbstrac


课题组简介

本课题组是苏州大学功能纳米与软物质研究院(FUNSOM)廖良生教授领衔的研究团队,现有特聘教授1名、副教授2名、讲师1名、博士后1名、博士生6名、硕士生近20名,本科实习生10余名。主要研究方向包括有机光电器件、半导体器件物理和材料化学等领域,形成了独具特色与文化的研究氛围,并具备化学合成、器件制备、器件分析等一流实验条件。

本组研究设施齐全、研究经费充裕,与美国罗切斯特大学、加拿大滑铁卢大学、日本富山大学、德国洪堡大学、台湾清华大学、香港大学、香港城市大学的研究小组已建立密切的学术和学生交流关系。

  本课题组招收硕士和博士研究生,并邀请本科生参加科研活动;同时招收博士后研究人员,并提供有竞争力的优厚待遇。欢迎具有物理、化学、材料、或电子学背景的有志青年加盟我组。