Whispering Gallery Mode Enabled Efficiency Enhancement: Defect and Size Controlled CdSe Quantum Dot Sensitized Whisperonic Solar Cells.

ABSTRACT: A synergetic approach of employing smooth mesoporous TiO₂ microsphere (SμS-TiO₂)-nanoparticulate TiO₂ (np-TiO₂) composite photoanode, and size and defect controlled CdSe quantum dots (QD) to achieve high efficiency (η) in a modified Grätzel solar cell, quantum dot sensitized whisperonic solar cells (QDSWSC), is reported. SμS-TiO₂ exhibits whispering gallery modes (WGM) and assists in enhancing the light scattering. SμS-TiO₂ and np-TiO₂ provide conductive path for efficient photocurrent charge transport and sensitizer loading. The sensitizer strongly couples with the WGM and significantly enhances the photon absorption to electron conversion. The efficiency of QDSWSC is shown to strongly depend on the size and defe

SUBMITTER: Das TK 

PROVIDER: S-EPMC6018832 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature