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## Extra ideas  ## Quantum Dots  Quantum dot sensitised solar cells (QDSSCs) are a variation of this design in which colloidal quantum dots (QDs) replace the organic dye. A number of the properties of QDs make them well-suited to the role of photoabsorber. In particular, they have a band gap that can often be size-tuned to optimise exploitation of the solar spectrum; they are photo-stable and highly absorbing; and they can in some cases exhibit multiple exciton generation. This process has the potential to enable the Shockley–Queisser (SQ) limit of solar cell efficiency to be exceeded. \cite{McElroy_2014}  The most efficient device was sensitised by the CdTe/CdSe QDs, largely due to its significantly greater short-circuit current density, \( J_{SC}\), which is more than double that of the  CdSe/CdTe sensitised devices.  ## Solar concetrators  \( \zeta_{SQ} \) can be improved by the use of concentrators, many of the inefficiencies get toned down in the presence of concentrators. Increased sun ligth also creates increases Auger processes so a balance must be made. By simultaneously optimizing both objectives an increase of 2-3% in total efficency can be made.  ## Double heterostructures (DH)   A novel approach to use wide bandgap II-VI semiconductors and a thin crystalline CdTe to form a double-heterostructure solar cell thas shown to improve manufacturing cost and long term stability.  Work has been done with CdTe, MgCdTe and ZnTe DH.  Measurements on CdTe/MgCdTe DH have shown carrier lifetimes of more than one order of magnitude longer than that of polycrystalline CdTe films.\cite{Zhao_2014}  diff --git a/layout.md b/layout.md  index 00193d0..a954abd 100644  --- a/layout.md  +++ b/layout.md 
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Anti_reflective_coating_Mention_about__.md  Manufacturing_and_Process_optimization_ULtimately__.md  figures/first Solar road map/first Solar road map.jpg  Extra_ideas_Quantum_Dots_Quantum__.md  Material_Genomes_Initiative_How_should__.md  Design_Modification_Proposal__.md  figures/startegies/startegies.png