Multisource Evaporation of Perovskite Solar Cells
type: CreativeWork
description: This thesis focuses on the emerging semiconductor family of metal-halide perovskites for their application in solar cells. Halide perovskite materials have shown several promising properties, such as high absorption coefficient, low exciton binding energy, high charge mobility, long diffusion length and low annealing temperature. Moreover, their tunable bandgaps, with emission from the blue to near-infrared spectrum region possible, demonstrates their potential for different optoelectronic applications, such as solar cells, light-emitting diodes and transistors. The device performance of perovskite solar cells has increased rapidly to 25.7% in 12 years. This incredible improvement is based on a myriad of research works, mostly on solution- processed perovskites, as solution processing allows rapid screening of experiment protocols in the lab. However, scaling up perovskite solar cells for real-world impact is critical to solving energy demand crisis and climate change by using renewable energy with low-carbon emissions. Vacuum deposition, an industrially compatible deposition method, can provide smooth, uniform and solvent-free thin films for solar cell fabrication. In this thesis, the deposition and characterisation of multisource evaporated perovskite films with MA-free composition for solar cells has been studied. Chapter 4 shows that the underlying substrate can affect the perovskite quality, form different grain sizes and preferred structure orientations. Excess PbI2 during the evaporation can improve the film moisture stability and photoluminescence quantum efficiency. The importance of deposition rate is also highlighted here, showing the issue with halide uniformity. Furthermore, non-radiative losses in p-i-n architecture has been identified. After optimising the amount of excess PbI2, solar cell device performance of 18.1% can be achieved, which was the highest MA-free perovskite solar cell from multisource evaporation system at the time of the work. In cha…
abstract: This thesis focuses on the emerging semiconductor family of metal-halide perovskites for their application in solar cells. Halide perovskite materials have shown several promising properties, such as high absorption coefficient, low exciton binding energy, high charge mobility, long diffusion length and low annealing temperature. Moreover, their tunable bandgaps, with emission from the blue to near-infrared spectrum region possible, demonstrates their potential for different optoelectronic applications, such as solar cells, light-emitting diodes and transistors. The device performance of perovskite solar cells has increased rapidly to 25.7% in 12 years. This incredible improvement is based on a myriad of research works, mostly on solution- processed perovskites, as solution processing allows rapid screening of experiment protocols in the lab. However, scaling up perovskite solar cells for real-world impact is critical to solving energy demand crisis and climate change by using renewable energy with low-carbon emissions. Vacuum deposition, an industrially compatible deposition method, can provide smooth, uniform and solvent-free thin films for solar cell fabrication. In this thesis, the deposition and characterisation of multisource evaporated perovskite films with MA-free composition for solar cells has been studied. Chapter 4 shows that the underlying substrate can affect the perovskite quality, form different grain sizes and preferred structure orientations. Excess PbI2 during the evaporation can improve the film moisture stability and photoluminescence quantum efficiency. The importance of deposition rate is also highlighted here, showing the issue with halide uniformity. Furthermore, non-radiative losses in p-i-n architecture has been identified. After optimising the amount of excess PbI2, solar cell device performance of 18.1% can be achieved, which was the highest MA-free perovskite solar cell from multisource evaporation system at the time of the work. In cha…
author: Chiang, Yu-Hsien
language: eng
keywords: Evaporation, perovskite, solar cells
license: https://www.rioxx.net/licenses/all-rights-reserved/
date published: 2022-09-30
date modified: 2026-07-24T01:32:57Z
provider: Cambridge University
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: University of Cambridge

PropertyValue
property ID: DOI
value: 10.17863/CAM.93950