Direct measurement of the exciton binding energy and effective masses for charge carriers in organic–inorganic tri-halide perovskites
Nature Physics Springer Science and Business Media LLC 11:7 (2015) 582-587
Direct measurement of the exciton binding energy and effective masses for charge carriers in organic–inorganic tri-halide perovskites
Nature Physics Springer Nature 11:7 (2015) 582-587
Out shining silicon.
Scientific American 313:1 (2015) 54-59
Phosphonic anchoring groups in organic dyes for solid-state solar cells.
Physical chemistry chemical physics : PCCP 17:28 (2015) 18780-18789
Abstract:
We report the synthesis and the optoelectronic characterization of three new 4H-pyran-4-ylidene and thiazole derivatives (pyt) as metal-free organic dyes for solid-state dye-sensitized solar cells (DSSCs). We investigate the performance and the long-term stability of devices employing pyt dyes functionalized with carboxylic and phosphonic acids as TiO2 anchoring groups. In contrast to reports on liquid electrolyte DSSCs, we show that solid-state DSSCs prepared with phosphoric pyt derivatives can achieve similar power conversion efficiency to their carboxyl analogues. We make use of the Mott-Schottky analysis and equivalent circuit models to demonstrate that a phosphonic group induces a significant increase in built-in voltage at the TiO2-hole transporter interface, which results in a higher open circuit voltage.Novel Low Cost Hole Transporting Materials for Efficient Organic-Inorganic Perovskite Solar Cells
Institute of Electrical and Electronics Engineers (IEEE) (2015) 1-4