| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advances in Emerging Electronic Nanomaterials: Towards Next-Generation Microelectronics
|
| Presentation Title |
Enhanced Near Infrared Emission of SiGe Nanocrystals by Heterostructuring with Hybrid Perovskite |
| Author(s) |
Yeonjoo Lee, Doyun Kim, Mircea Cotlet, John Watt, Winson Kuo, Wanyi Nie, Uwe Kortshagen, Jinkyoung Yoo |
| On-Site Speaker (Planned) |
Yeonjoo Lee |
| Abstract Scope |
Colloidal group-IV nanocrystals (NCs) are beneficial because they can serve as an ink, allowing for the printing of optoelectronic devices in the form of thin films. SiGe NCs hold promise for applications requiring near infrared (NIR) emission, such as bioimaging, night vision, and optical communication.
Heterostructuring with colloidal quantum dots and perovskites has drawn attention for inducing synergistic interactions between materials, leading to improved and advanced material properties and performance.
Here, SiGe NCs, synthesized via nonthermal plasma, formed a heterostructure with perovskite, specifically quasi two-dimensional CsPbBr3, exhibiting green PL. The heterostructure was prepared by stacking perovskite and SiGe NC films. While the SiGe NCs themselves did not emit, NIR emission was observed after heterostructuring with the perovskite. Energy transfer from the perovskite to the SiGe NCs caused the appearance of the PL. |