Plasma synthesis of silicon nanocrystals and application to organic/inorganic hybrid photovoltaics
Silicon nanocrystals (SiNCs) have unique optical and electronic properties that are advantageous for device applications.Here we have explored its potential application to photovoltaics.Solution processable,freestanding silicon nanocrystals were synthesized firstly by VHF non-thermal plasma reactor using silicon tetrachloride as a silicon precursor.And then it was successfully employed as the electron acceptor in SiNCs/P3HT hybrid solar cells.SiNCs incorporation in P3HT introduces a large SiNCs/P3HT interface,which facilitates the exciton separation through the interface.However,recombination centers in SiNCs may have a negative effect on device performance.In order to eliminate recombination centers,SiNCs annealing was conducted in N2 atmosphere with 3% H2.Device performance is enhanced dramatically after annealing at 400℃ for 2 hours.This method provides us a route to further enhance the SiNCs/P3HT hybrid solar cell efficiency.
Yi Ding Ryan Gresback Ken Okazaki Tomohiro Nozaki
Department of Mechanical and Control Engineering Department of Mechanical Sciences and Engineering,Tokyo Institute of Technology, Tokyo 152-8550, Jap
国际会议
The 22nd International Photovoltaic Science and Engineering Conference (第22届国际光伏科学与工程会议)
杭州
英文
1-4
2012-11-05（万方平台首次上网日期，不代表论文的发表时间）