Mr. Aaren Harewood Profile

Aaren Harewood

at Oakwood Univ.

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 4 March 2022 Presentation + Paper

Rare earth doped perovskites for efficient solar spectrum down-conversion

Darayas Patel, Sergey Sarkisov, Abdalla Darwish, Mike Warren, Jessica Ambroise, Wilbert Mays, Aaren Harewood, Robert Henley

Proceedings Volume 11997, 1199706 (2022) https://doi.org/10.1117/12.2605385

KEYWORDS: Perovskite, Ytterbium, Near infrared, Ultraviolet radiation, Solar cells, Visible radiation, Ions, Solar energy, Photons, Crystals

Read Abstract +

Perovskites doped with rare earth (RE) ions can be used to convert efficiently UV component of solar radiation spectrum in the near-infrared (NIR) radiation suitable for generating electricity in conventional silicon-based photovoltaic (PV) cells. These materials have good ability to capture the energy of the incident UV photons and transfer it to the embedded RE ions, such as Yb³⁺ emitting NIR photons. In this paper we explored two methods of synthesis of down-converting REdoped metal halide perovskites CsPbCl_xBr_1-x: Yb³⁺: the hot injection method of making nanoparticles (NP) and the two-stage spin-casting fabrication of the nano-films. The hot-injection method resulted in the NP with an average size varying from 4 to 120 nm. The XRD spectroscopy revealed that the synthesized NP had the crystalline structure like orthorhombic bulk crystal of CsPbBr3. The PL spectrum of the Yb³⁺ perovskite NP revealed the NIR PL peak at 980 nm attributed to the relaxation of the excited ion of Yb³⁺ and indicating that the process of spectral down-converting (quantum cutting) took place. Besides well-known dependence of the color of visible PL on the composition of the perovskite CsPbX3 (blue for X = Br, yellow – X = Cl, and red – X = I), we showed that the wavelength of the visible PL peak increases with the average size of the NP of CsPbCl_1.5Br_1.5. The nano-films of CsPbCl_xBr_1-x: Yb³⁺ prepared by the spin-casting method demonstrated visible PL of blue-green color. The obtained results might be of significance to the applications related to the efficient solar power and green power technology.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years