Yaghoobi Nia, N;
Zendehdel, M;
Abdi-Jalebi, M;
Castriotta, LA;
Kosasih, FU;
Lamanna, E;
Abolhasani, MM;
... Di Carlo, A; + view all
(2021)
Beyond 17% stable perovskite solar module via polaron arrangement of tuned polymeric hole transport layer.
Nano Energy
, 82
, Article 105685. 10.1016/j.nanoen.2020.105685.
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Abstract
Operational stability of perovskite solar cells (PSCs) is rapidly becoming one of the pressing bottlenecks for their upscaling and integration of such promising photovoltaic technology. Instability of the hole transport layer (HTL) has been considered as one of the potential origins of short life-time of the PSCs. In this work, by varying the molecular weight (MW) of doped poly(triarylamine)(PTAA) HTL, we improved by one order of magnitude the charge mobility inside the HTL and the charge transfer at the perovskite/HTL interface. We demonstrate that this occurs via the enhancement of polaron delocalization on the polymeric chains through the combined effect of doping strategy and MW tuning. By using high MW PTAA doped combining three different dopant, we demonstrate stable PSCs with typical power conversion efficiencies above 20%, retain more than 90% of the initial efficiency after 1080 h thermal stress at 85 °C and 87% of initial efficiency after 160 h exposure against 1 sun light soaking. By using this doping-MW strategy, we realized perovskite solar modules with an efficiency of 17% on an active area of 43 cm2, keeping above 90% of the initial efficiency after 800 h thermal stress at 85 °C. These results, obtained in ambient conditions, pave the way toward the industrialization of PSC-based photovoltaic technology.
| Type: | Article |
|---|---|
| Title: | Beyond 17% stable perovskite solar module via polaron arrangement of tuned polymeric hole transport layer |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.nanoen.2020.105685 |
| Publisher version: | https://doi.org/10.1016/j.nanoen.2020.105685 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Perovskite photovoltaic modules, PTAA, Stability, Polaron, Molecular weight |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office > Institute for Materials Discovery |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10119209 |
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