How Transparent Oxides Gain Some Color: Discovery of a CeNiO3 Reduced Bandgap Phase As an Absorber for Photovoltaics
| Autor: | Arie Zaban, David A. Keller, Shay Tirosh, Kevin J. Rietwyk, Simcha Meir, Adam Ginsburg, Hannah-Noa Barad, Assaf Y. Anderson |
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| Rok vydání: | 2018 |
| Předmět: |
Diffraction
business.industry Band gap Chemistry Non-blocking I/O Photovoltaic system 02 engineering and technology General Chemistry General Medicine 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Pulsed laser deposition law Photovoltaics Phase (matter) Solar cell Optoelectronics 0210 nano-technology business |
| Zdroj: | ACS Combinatorial Science. 20:366-376 |
| ISSN: | 2156-8944 2156-8952 |
| Popis: | In this work, we describe the formation of a reduced bandgap CeNiO3 phase, which, to our knowledge, has not been previously reported, and we show how it is utilized as an absorber layer in a photovoltaic cell. The CeNiO3 phase is prepared by a combinatorial materials science approach, where a library containing a continuous compositional spread of CexNi1–xOy is formed by pulsed laser deposition (PLD); a method that has not been used in the past to form Ce–Ni–O materials. The library displays a reduced bandgap throughout, calculated to be 1.48–1.77 eV, compared to the starting materials, CeO2 and NiO, which each have a bandgap of ∼3.3 eV. The materials library is further analyzed by X-ray diffraction to determine a new crystalline phase. By searching and comparing to the Materials Project database, the reduced bandgap CeNiO3 phase is realized. The CeNiO3 reduced bandgap phase is implemented as the absorber layer in a solar cell and photovoltages up to 550 mV are achieved. The solar cells are also measured ... |
| Databáze: | OpenAIRE |
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