1Li Y,Shan W,Cheng S,Ko M.Wavelength-converting phosphors for enhancing the efficiency of a photovoltaic device. Patent: WO 2007/133344 .
2Tabirou M E,Daoudi A.Une nouvelle famille de phosphates triples d’’éléments alcalins, alcalinoterreux et de terres rares. C.R. Acad. Sci. Série C . 1980
3Trupke T,Green M A,Würfel P.Improving solar cell efficien- cies by down-conversion of high-energy photons. Journal of Applied Physics . 2002
4Trupke T,Shalav A,Richards B S,Würfel P,Green M A.Efficiency enhancement of solar cells by luminescent up-conversion of sunlight. Solar Energy Materials . 2006
5Shalav A,Richards B S,Green M A.Luminescent layers for enhanced silicon solar cell performance: Up-conversion. Solar Energy Materials . 2007
6Srivastavma A M,Sobierasj T,Ruan K,Banks E.Sensitization of the Gd 3+ lattice by Pr 3+ in GdBO 3and energy transfer to Ln 3+ (Ln 3+ =Dy 3+ , Sm 3+ , and Tb 3+ ). Materials Research Bulletin . 1986
7Srivastava A M,Gieger T S,Banks E.Luminescence and energy transfer in BaGdB 9O 16. Materials Chemistry and Physics . 1989
8Hiran H,Blasse G.Energy transfer phenomena in luminescent materials based on GdB 3O 6. Materials Chemistry and Physics . 1985
9Zhang Z J,,Yuan J L,Duan C J,Xiong D B,Chen H H,Zhao J T,Zhang G B,Shi C S.Vacuum ultraviolet spectroscopic properties of rare earth (RE=Ce, Tb, Eu, Tm, Sm)-doped hexagonal KCaGd(PO 4) 2phosphate. Journal of Applied Physics . 2007
10H.Shpaisman,O.Niitsoo, et al.Can up- and down-conversion and multi-exciton generation improve photovoltaics?. Sol.Energy Mater.Sol.Cells . 2008
