Abstract
Solution-processed organic semiconductor layers on rough surfaces tend to vary widely in thickness, significantly hindering charge extraction in relevant optoelectronic devices. Herein, we report the photoactivated p-doping of hole-transporting material (HTM) to enhance hole extraction for (textured) perovskite/silicon tandem solar cells, making the device performance less sensitive to the variation of hole transport layer thickness. We used the ionic compound 4-isopropyl-4′-methyldiphenyliodonium tetrakis(penta-fluorophenyl-borate) (DPITPFB) as a p-type dopant in poly(triaryl amine) (PTAA), which we used as the HTM. We observed that light soaking DPI-TPFB-doped PTAA shows approximately 22 times higher conductivity compared with an undoped PTAA film, which translated into an improved fill factor (FF) for tandem solar cells. Our tandem solar cells achieved an ∼80% FF and 27.8% efficiency and operated at their maximum power point for 200 h without loss of performance, in addition to retaining ∼83% of initial performance over a month of operation in an outdoor environment.
| Original language | English |
|---|---|
| Pages (from-to) | 1987-1993 |
| Number of pages | 7 |
| Journal | ACS Energy Letters |
| Volume | 7 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 10 2022 |
Bibliographical note
Publisher Copyright:© 2020 American Chemical Society.
Funding
The authors acknowledge the funding support from KAUST and Aramco (Grant No. RGC/3/4556-01-01). J.L., E.A., W.Y., M.D.B., and S.D.W. thank KAUST for funding under Award Nos. OSR-CARF/CCF-3079, OSR-CRG2019-4093, and IED OSR-2019-4208. This work was authored in part by the National Renewable Energy Laboratory, operated by Alliance for Sustainable Energy, LLC, for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308. The NREL affiliated authors acknowledge the Tandem Photovoltaics project funded by the Solar Energy Technology Office within the US DOE Energy Efficiency and Renewable Energy under contract SETP DE-EE00038266. T.L., K.N.B., and K.R.G. acknowledge funding from the National Science Foundation under award OIA-1929131 (T.L. and K.R.G) and DMR-1905734 (K.N.B. and K.R.G).The views expressed in the Letter do not necessarily represent the views of the DOE or the U.S. Government.
| Funders | Funder number |
|---|---|
| DOE Energy Efficiency and Renewable Energy | SETP DE-EE00038266 |
| National Science Foundation Arctic Social Science Program | OIA-1929131, DMR-1905734 |
| U.S. Department of Energy EPSCoR | DE-AC36-08GO28308 |
| National Renewable Energy Laboratory | |
| Solar Energy Technologies Office | |
| King Abdullah University of Science and Technology | |
| Saudi Aramco | OSR-CRG2019-4093, IED OSR-2019-4208, RGC/3/4556-01-01, OSR-CARF/CCF-3079 |
ASJC Scopus subject areas
- Chemistry (miscellaneous)
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Energy Engineering and Power Technology
- Materials Chemistry