Abstract
Back-contact perovskite solar cells offer a significant potential to reach high efficiency due to reduced parasitic absorption from the top surface. However, the currently reported efficiencies are considerably lower (<10%) than planar perovskite solar cells (>20%). Herein, back-contact perovskite solar cells are fabricated to study loss mechanisms that cause low device efficiency. This work spatially resolves the short-circuit current, open-circuit voltage, photoluminescence quantum yield, carrier lifetime, and external quantum efficiency of the devices. The results indicate that the front surface recombination, increased nonradiative recombination at hole contact layer/perovskite interface, and the extraction barriers are three main mechanisms limiting devices from achieving high efficiencies.
| Original language | English |
|---|---|
| Article number | 2300241 |
| Pages (from-to) | 1-7 |
| Number of pages | 7 |
| Journal | Advanced Materials Technologies |
| Volume | 8 |
| Issue number | 16 |
| Early online date | 24 Jun 2023 |
| DOIs | |
| Publication status | Published - 25 Aug 2023 |
| Externally published | Yes |
Funding
E.C.G. proposed the project. S.G. performed the lifetime measurement. S.A.R. and J.S.B. performed the PLQY and absorption measurement. H.S. fabricated the devices and did the rest of the measurements. K.D. helped with perovskite synthesis. H.S., S.G., and E.C.G. wrote the manuscript. This work was supported by the Netherlands Organization for Scientific Research (NWO) through the Joint Solar Program III.
| Funders |
|---|
| Joint Solar Program III |
| Nederlandse Organisatie voor Wetenschappelijk Onderzoek |
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