(Invited) Organic-Inorganic Hybrid Solar Cells with Antimony Sulfide-Metal Composites

Abstract

Organic-inorganic hybrid solar cells composed of glass/F-doped SnO2/TiO2/La-decorated or Zn-doped Sb2S3/ poly[(3hexylthiophene)-2,5-diyl]/poly [3-(3-carboxypropyl)thiophene-2,5diyl]/Au have been prepared and evaluated their photovoltaic performance. Using La-decorated Sb2S3 for hybrid solar cell resulted in 33% improvement of power conversion efficiency (PCE) as compared to that of the non-decorated Sb2S3 because of lowering the resistance at the interface, which was confirmed by the impedance analyses. It was found that the added La was phaseseparated and accumulated between the layers of TiO2 and Sb2S3. While doping of Zn into Sb2S3 resulted in the enlargement of the crystallite size of Sb2S3 from 14 nm to 25 nm. Utilization of Zndoped Sb2S3 for hybrid solar cell attained 57% enhancement of PCE. This result is ascribed to the effective lowering the bulkresistance.

(Invited)Improved Interfaces in Multilayered Organic-Inorganic Hybrid Solar Cells with π-Conjugated Polymers-Antimony Sulfide-Strontium Titanate-Titanium Oxide

“…For examples, utilization of zinc phthalocyanine (ZnPC) for the hybrid solar cell composed of glass/indium-tin-oxide (ITO)/TiO2/Sb2S3/ZnPC/Au achieved long durability with keeping the relative power conversion efficiency (PCE) of 90% after the stability test under 1 sun at 63 °C at a relative humidity of 50% for 1,500 h (1). Using Ladecorated Sb2S3 for hybrid solar cell composed of glass/F-doped SnO2 (FTO)/TiO2/Ladecorated Sb2S3/poly[(3-hexylthiophene)-2,5-diyl] (P3HT)/poly[3-(3carboxypropyl)thiophene-2,5-diyl] (P3CT)/Au resulted in 33% improvement of PCE as compared to that of the non-decorated Sb2S3 because of lowering the resistance at the interface, which was confirmed by the impedance analyses (2). While doping of Zn into Sb2S3 attained 57% enhancement of PCE.…”