Flexible Polymer Colloidal-Crystal Lasers with a Light-Emitting Planar Defect


  • This study was supported in part by the Strategic Information and Communications R&D Promotion Programme (SCOPE) Project (No. 062103003) from the Ministry of Internal Affairs and Communications (MIC), the Grant-in-Aid for Encouragement of Young Scientists (B) (No. 18750128) from the Ministry of Education, Science, Sports and Culture (MEXT) of Japan, and the Amada Foundation for Metal Work Technology (No. AF-2006025). S.F. expresses sincere thanks to Mr. T. Awane and Ms. J. Imasu for technical assistance, Dr. M. Nishino for helpful discussions, Dr. I. Ichinose for fluorescence measurement, and Dr. M. Hase for optical ellipsometry measurement. H.T.M. is grateful to Prof. H. Míguez of the Institute of Materials Science of Seville in Spain for technical suggestions about the scalar-wave approximation technique. Supporting Information is available from Wiley InterScience of from the author.


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Flexible polymer laser devices excited by low-threshold optical light are fabricated from colloidal crystals (CCs; see figure). The laser-cavity structure consists of a light-emitting layer sandwiched between two polymer CC films. Optical excitation with a green beam brings about emission with a red beam. This process allows the production of ultralightweight, low-cost, flexible, and easily processible all-plastic lasers.