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Improved photovoltage of printable perovskite solar cells via $Nb^{5+}$ doped $SnO_{2}$ compact layer
| Content Provider | Scilit |
|---|---|
| Author | Wang, Shiyu Shen, Wenjian Liu, Jiale Ouyang, Tao Wu, Yue Li, Wenhui Chen, Mingyue Qi, Pengcheng Lu, Yu Tang, Yiwen |
| Copyright Year | 2020 |
| Description | Journal: Nanotechnology The state-of-the-art perovskite solar cells (PSCs) with $SnO_{2}$ electron transporting material (ETL) layer displays the probability of conquering the low electron mobility and serious leakage current loss of the $TiO_{2}$ ETL layer in photoelectronic devices. The rapid development of $SnO_{2}$ ETL layer has brought perovskite efficiencies >20%. However, high density of defect states and voltage loss of high temperature $SnO_{2}$ are still latent impediment for the long-term stability and hysteresis effect of photovoltaics. Herein, $Nb^{5+}$ doped $SnO_{2}$ with deeper energy level is utilized as a compact ETL for printable mesoscopic PSCs. It promotes carrier concentration increase caused by n-type doping, assists Fermi energy level and conduction band minimum to move the deeper energy level, and significantly reduces interface carrier recombination, thus increasing the photovoltage of the device. As a result, the use of $Nb^{5+}$ doped $SnO_{2}$ brings high photovoltage of 0.92 V, which is 40 mV higher than that of 0.88 V for device based on $SnO_{2}$ compact layer. The resulting PSCs displays outstanding efficiency of 13.53%, which contains an ∼10% improvements compared to those without $Nb^{5+}$ doping. Our study emphasizes the significance of element doping for compact layer and lays the groundwork for high efficiency PSCs. |
| Related Links | https://iopscience.iop.org/article/10.1088/1361-6528/abd207/pdf |
| ISSN | 09574484 |
| e-ISSN | 13616528 |
| DOI | 10.1088/1361-6528/abd207 |
| Journal | Nanotechnology |
| Issue Number | 14 |
| Volume Number | 32 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2020-12-09 |
| Access Restriction | Open |
| Subject Keyword | Journal: Nanotechnology Perovskite Solar Cells |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Nanoscience and Nanotechnology Mechanics of Materials Mechanical Engineering Bioengineering Electrical and Electronic Engineering |
