Improvement of conversion efficiency for multi-junction solar cells by incorporation of Au nanoclusters Yang, M. D. ; Liu, Y. K. ; Shen, J. L. ; Wu, C. H. ; Lin, C. A. ; Chang, W. H. ; Wang, H. H. ; Yeh, H. I. ; Chan, W. H. ; Parak, W. J. Abstract Publication: Optics Express Pub Date: September 2008 DOI: 10.1364/OE.16.015754 Bibcode: 2008OExpr..1615754Y