Details

Autor(en) / Beteiligte

• Scheffel, Benjamin Ryken

Titel

Hybrid Organic-CQD Solar Cells Using a Near-IR-Absorbing Organic Bulk Heterojunction

Ort / Verlag

ProQuest Dissertations & Theses

Erscheinungsjahr

2019

Quelle

ProQuest Dissertations & Theses A&I

Beschreibungen/Notizen

• Solar photovoltaics requires further progress in efficiency at lower cost. Colloidal quantum dots (CQDs) are one of many emerging technologies that has been researched in recent years that could play a role in the future of photovoltaics. In this thesis, I developed a new hybrid organic CQD solar cell that achieved a power conversion efficiency (PCE) of 13.98% for the champion device, a record for CQD PV. Charge collection issues at the organic-CQD interface were identified with a study of the spatial collection efficiency of the device and were overcome by introducing a thin buffer layer of CQDs doped with 1,2-ethanedithiol. The hybrid devices were also used as the back cell in a four-terminal tandem device along with a perovskite top cell which was able to achieve a PCE of 23.2% with help from the broad absorption from 700–1100 nm enabled by the hybrid structure.