Fabrication and characterization of PEDOT:PSS hole transport layers for silicon solar cells

Date

2019

Author

Türkay, Deniz

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

441
views

0
downloads

Heterojunction silicon solar cells have gained considerable interest in recent years with the demonstration of record-high device performances. However, these devices are typically based on inorganic layers fabricated at high temperatures under vacuum environment, using toxic precursors. The low temperature budget, non-toxic chemical contents, and wide range of adjustability in physical and electrical properties make poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) a promising candidate as an organic hole-transport layer (HTL) for low-cost silicon solar cells. In this thesis, effects of process conditions and chemical additives on the electrical performance of PEDOT:PSS layers on p-type silicon [(p)Si] are analyzed. Electrical performance is assessed in terms of contact resistivity and contact saturation current density. A rapid measurement procedure is proposed and utilized to extract contact resistivity of (p)Si/PEDOT:PSS interface, without the necessity for metal deposition or numerical simulations. Ultimately, contact resistivities smaller than 0.3 ohm.cm2, and contact saturation current densities near 200 fA/cm2 are demonstrated.

Subject Keywords

Solar cells., Keywords: Solar cell, Silicon, Organic, Heterojunction.

URI

http://etd.lib.metu.edu.tr/upload/12624536/index.pdf
https://hdl.handle.net/11511/44631

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Surface modification of multi-crystalline silicon in photovoltaic cell by laser texturing Radfar, Behrad; Turan, Raşit; Yerci, Selçuk; Department of Micro and Nanotechnology (2019) Surface of crystalline silicon solar cell plays an important role in its performance. It affects the optical properties which can be determined by surface’ reflectance. To minimize the reflection from the flat surface, thus, improve light trapping, the crystalline silicon wafers must be textured. Through the texturing process, roughness is introduced at the surface, so the incident light has a larger probability of being absorbed into the solar cell. Monocrystalline silicon solar cells can typically be text...
Three dimensional crystalline silicon solar cells Baytemir, Gülsen; Turan, Raşit; Department of Physics (2018) Three-dimensional crystalline silicon solar cells have been attracting attention with its remarkable electrical and optical performance. In this geometry, nano/micropillars allow minority carrier collection in the radial direction and shorten the path length of the photogenerated carriers. Furthermore, with appropriate geometry of the pillars the solar cell efficiency is enhanced due to the reduced surface reflectance and increased light harvesting. Throughout this study, metal assisted etching (MAE), a top...
Fabrication of thin crystalline silicon solar cells with advanced light trapping Hadibrata, Wisnu; Yerci, Selçuk; Turan, Raşit; Department of Micro and Nanotechnology (2017) Thin crystalline silicon (c-Si) solar cells with thickness in the order of few tens of microns offer many attractive applications, such as, electronic wearables, space probes and satellites thanks to their flexibility and light-weight character. However, reducing the thickness of active layer of silicon solar cells leads to poor light absorption within the silicon layer, especially in the near infrared region of the solar spectrum. The poor absorption becomes problematic for thin c-Si solar cells as it caus...
Analysis of boron doped hydrogenated amorphous silicon carbide thin film for silicon heterojunction solar cells Salimi, Arghavan; Turan, Raşit; Department of Micro and Nanotechnology (2019) Silicon based solar cells are the dominant type of solar cells in the photovoltaic industry. Recently, there have been increasing efforts to develop c-Si solar cells with higher efficiency and lower cost. Among them, silicon heterojunction solar cell (SHJ) is attracting much attention because of its superior performance values demonstrated at both R&D and industrial levels. One of the common limiting criteria is the recombination at the front side which can be solved by providing proper passivation at the f...
Selective emitter formation via single step doping through laser patterned mask oxide layer for monocrystalline silicon solar cells Çiftpınar, Emine Hande; Turan, Raşit; Department of Physics (2014) Selective emitter is one of the new approaches for higher efficiency solar cells. Although selective emitter cells could be processed by several different methods such as; etch back process, laser doping, ion implantation, doping paste, a different method based on diffusion through a laser patterned oxide layer was studied in this thesis. Utilization of pattern oxide layer as a diffusion barrier enables to obtain selective emitter profile via single step doping which reduces overall production cost and time...

Citation Formats

D. Türkay, “Fabrication and characterization of PEDOT:PSS hole transport layers for silicon solar cells,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Micro and Nanotechnology., Middle East Technical University, 2019.