Show/Hide Menu
Hide/Show Apps
anonymousUser
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Açık Bilim Politikası
Açık Bilim Politikası
Frequently Asked Questions
Frequently Asked Questions
Browse
Browse
By Issue Date
By Issue Date
Authors
Authors
Titles
Titles
Subjects
Subjects
Communities & Collections
Communities & Collections
Planar perovskite solar cells with metal oxide transport layers by co-evaporation and hybrid vapor-solution sequential method
Download
index.pdf
Date
2020
Author
Soltanpoor, Wiri
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
3
views
0
downloads
The recent success in achieving beyond 25% efficiency with perovskite solar cells (PSC) has called for further upgrading the fabrication techniques to meet the scalability requirements of the photovoltaic (PV) industry. Co-evaporation and a hybrid vapor-solution technique have been shown to produce uniform and efficient planar PSCs. Therefore, in this study, co-evaporation method was optimized studying the partial pressure of the organic precursor. Later electron transport layers in n-i-p and p-i-n structures were addressed achieving 13.0% and 16.1% efficiencies, respectively. Besides, mixed-halide perovskites were fabricated following a hybrid sequential method focusing on the deposition rate of PbI2 and a solution of methylammonium-halides to control the crystallization and morphology of the perovskite layer. This conferred efficiencies up to 19.8% in the case of MAPbI3-X-YBrXClY with 90 hours of operational stability. This is an important measure towards scalability due to the uniform deposition of the first inorganic layer by vacuum-deposition. As another step towards the scalability of perovskite PV, radio frequency (RF) magnetron sputtering was devised to deposit NiOX as a hole transport layer with wide bandgap, matched band structure with perovskite, and stability. The effect of Ar-partial pressure, deposition rate on the optoelectronic properties of the sputtered NiOX was investigated. The passivation of NiOX using organic (Poly-TPD) and inorganic (CuO) materials boosted the overall efficiency of the PSCs by 2.2% and 1.2%, respectively. Finally, Cu doping NiOX via co-sputtering enhanced the efficiency of the PSCs by 3%. This thesis provides a benchmark for applying scalable methods (from evaporation to sputtering) towards efficient PSCs.
Subject Keywords
Perovskite.
,
Perovskite
,
Co-evaporation
,
Partial pressure
,
Sputtering
,
Hybrid vapor solution
URI
http://etd.lib.metu.edu.tr/upload/12625367/index.pdf
https://hdl.handle.net/11511/45361
Collections
Graduate School of Natural and Applied Sciences, Thesis