The Effect of Lithium Doping in Solution‐Processed Nickel Oxide Films for Perovskite Solar Cells
| Autor: | Zahra Saki, Gerrit Boschloo, Kári Sveinbjörnsson, Nima Taghavinia |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
business.industry Nickel oxide Doping Energy conversion efficiency Analytical chemistry Crystal growth 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electrical resistivity and conductivity Photovoltaics Physical and Theoretical Chemistry Thin film Lithium doping 0210 nano-technology business |
| Zdroj: | ChemPhysChem. 20:3322-3327 |
| ISSN: | 1439-7641 1439-4235 |
| DOI: | 10.1002/cphc.201900856 |
| Popis: | The effect of substitutional Li doping into NiOx hole transporting layer (HTL) for use in inverted perovskite solar cells was systematically studied. Li doped NiOx thin films with preferential crystal growth along the (111) plane were deposited using a simple solution-based process. Mott-Schottky analysis showed that hole carrier concentration (NA ) is doubled by Li doping. Utilizing 4 % Li in NiOx improved the power conversion efficiency (PCE) of solar devices from 9.0 % to 12.6 %. Photoluminescence quenching investigations demonstrate better hole capturing properties of Li:NiOx compared to that of NiOx , leading to higher current densities by Li doping. The electrical conductivity of NiOx is improved by Li doping. Further improvements of the device were made by using an additional ZnO layer onto PCBM, to remove shunt paths, leading to a PCE of 14.2 % and a fill factor of 0.72. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text