AI Article Synopsis
- Recent advancements have increased the power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) to over 23%, but barriers like material properties and stability remain.
- A new method introduces ZnO nanowires on flexible substrates to leverage the piezo-phototronic effect, achieving a PCE increase from 9.3% to 12.8% under mechanical strain.
- This approach enhances PCE without altering the existing materials or device structure, providing a potential strategy for improving flexible PSC performance.
Article Abstract
Tremendous work has been made recently to improve the power conversion efficiencies (PCEs) of perovskite solar cells (PSCs); the best reported value is now over 23%. However, further improving the PCEs of PSCs is challenged by material properties, device stability, and packaging technologies. Here, we report a new approach to increase the PCEs of flexible PSCs via introducing the piezo-phototronic effect in the PSCs by growing an array of ZnO nanowires on flexible plastic substrates, which act as the electron-transport layer for PSCs. From the piezo-phototronic effect, the absolute PCE was improved from 9.3 to 12.8% for flexible perovskite solar cells under a static mechanical strain of 1.88%, with a ∼40% enhancement but no change in the components of materials and device structure. A corresponding working model was proposed to elucidate the strategy to boost the performance of the PSCs. These findings present a general approach to improve PCEs of flexible PSCs without changing their fundamental materials.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsnano.9b00125 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!