Abstract
We report a high efficiency antimony selenide (Sb2Se3) photovoltaic device structure using a new multi-step close space sublimation deposition process incorporating a Sb2Se3 seed layer; key to achieving higher efficiency devices via close space sublimation. Utilizing a glass|FTO|TiO2|Sb2Se3|PCDTBT|Au structure, a peak efficiency of 6.6% was achieved, which is comparable to the current record devices for this material. Crucially, this device avoids toxic lead in the hole transport material, and cadmium in the window layer. Moreover, the addition of the PCDTBT back contact both maintains peak efficiency of 6.6%, and improves the uniformity of performance, increasing the average efficiency from 4.3% to 6.1%.
| Original language | English |
|---|---|
| Pages (from-to) | 177-181 |
| Number of pages | 5 |
| Journal | Solar Energy Materials and Solar Cells |
| Volume | 188 |
| Early online date | 10 Sept 2018 |
| DOIs | |
| Publication status | Published - 15 Dec 2018 |
| Externally published | Yes |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Antimony selenide
- Organic
- Photovoltaics
- SbSe
- Solar cells
- Thin film
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