Zobrazeno 1 - 10
of 121
pro vyhledávání: '"Stelios A. Choulis"'
Autor:
Apostolos Ioakeimidis, Aristeidis Kottaras, Dimitrios Karageorgopoulos, Efstathia Christia, Sotirios Sakkopoulos, Evangelos Vitoratos, Stelios A. Choulis, Ioannis T. Papadas
Publikováno v:
Environmental Sciences Proceedings, Vol 26, Iss 1, p 63 (2023)
The electrical properties of solution-processed spinel nickel cobaltite (NiCo2O4) nanoparticulated-based metal oxide hole transporting layers are investigated using conductivity and Hall effect measurements. The mechanism of electrical conductivity o
Externí odkaz:
https://doaj.org/article/1bf293c0b4a44e7da5b4d7f94d4f9b00
Autor:
Ioannis T. Papadas, Apostolos Ioakeimidis, Ioannis Vamvasakis, Polyvios Eleftheriou, Gerasimos S. Armatas, Stelios A. Choulis
Publikováno v:
Frontiers in Chemistry, Vol 9 (2021)
This study outlines the synthesis and physicochemical characteristics of a solution-processable iron manganite (FeMnO3) nanoparticles via a chemical combustion method using tartaric acid as a fuel whilst demonstrating the performance of this material
Externí odkaz:
https://doaj.org/article/a74fe807c70f46a49f88cb3b18232473
Autor:
Apostolos Ioakeimidis, Ioannis T. Papadas, Eirini D. Koutsouroubi, Gerasimos S. Armatas, Stelios A. Choulis
Publikováno v:
Nanomaterials, Vol 11, Iss 11, p 3074 (2021)
Low temperature solution combustion synthesis emerges as a facile method for the synthesis of functional metal oxides thin films for electronic applications. We study the solution combustion synthesis process of Cu:NiOx using different molar ratios (
Externí odkaz:
https://doaj.org/article/db260364383b4a53b8984acf91c33020
Autor:
Efthymios Georgiou, Ioannis T. Papadas, Ioanna Antoniou, Marek F. Oszajca, Benjamin Hartmeier, Michael Rossier, Norman A. Luechinger, Stelios A. Choulis
Publikováno v:
APL Materials, Vol 7, Iss 9, Pp 091103-091103-6 (2019)
We have demonstrated a high-performance low temperature solution processed electron selective contact consisting of 10 at. % antimony doped tin oxide (ATO) and the neutral polymer polyethylenimine (PEI). Inverted organic photovoltaics (OPVs) utilizin
Externí odkaz:
https://doaj.org/article/c83ad009f34e45fba188e3676610608c
Autor:
Apostolos Ioakeimidis, Ioannis T. Papadas, Dimitris Tsikritzis, Gerasimos S. Armatas, Stella Kennou, Stelios A. Choulis
Publikováno v:
APL Materials, Vol 7, Iss 2, Pp 021101-021101-6 (2019)
A solution combustion synthesized hole transport layer (HTL) of spinel nickel cobaltite (NiCo2O4) incorporating 3% Cu–2% Li was fabricated using the doctor-blading technique for planar inverted perovskite solar cells (PVSCs). PVSCs incorporating 3%
Externí odkaz:
https://doaj.org/article/307f4b852bc0498fa277cb6466816fa5
Autor:
Sergey M. Pozov, Apostolos Ioakeimidis, Ioannis T. Papadas, Chen Sun, Alexandra Z. Chrusou, Donal D. C. Bradley, Stelios A. Choulis
Publikováno v:
Materials, Vol 13, Iss 22, p 5082 (2020)
The performance of solution-processed organic light emitting diodes (OLEDs) is often limited by non-uniform contacts. In this work, we introduce Ni-containing solution-processed metal oxide (MO) interfacial layers inserted between indium tin oxide (I
Externí odkaz:
https://doaj.org/article/180c25fd58574189b20e7b44031a6e01
Autor:
Fedros Galatopoulos, Ioannis T. Papadas, Apostolos Ioakeimidis, Polyvios Eleftheriou, Stelios A. Choulis
Publikováno v:
Nanomaterials, Vol 10, Iss 10, p 1961 (2020)
Inverted perovskite solar cells (PSCs) using a Cu:NiOx hole transporting layer (HTL) often exhibit stability issues and in some cases J/V hysteresis. In this work, we developed a β-alanine surface treatment process on Cu:NiOx HTL that provides J/V h
Externí odkaz:
https://doaj.org/article/d43ef6cf9fe84fd1bcc42111bbe9afab
Publikováno v:
Materials, Vol 13, Iss 15, p 3289 (2020)
We show that the addition of 1% (v/v) nitrobenzene within the perovskite formulation can be used as a method to improve the power conversion efficiency and reliability performance of methylammonium-free (CsFA) inverted perovskite solar cells. The add
Externí odkaz:
https://doaj.org/article/5beba841c3474baeb853a001c9293671
Autor:
Ignasi Burgués-Ceballos, Achilleas Savva, Efthymios Georgiou, Konstantinos Kapnisis, Paris Papagiorgis, Androniki Mousikou, Grigorios Itskos, Andreas Othonos, Stelios A. Choulis
Publikováno v:
AIP Advances, Vol 7, Iss 11, Pp 115304-115304-6 (2017)
We investigate the employment of carefully selected solvent additives in the processing of a commercial perovskite precursor ink and analyze their impact on the performance of organometal trihalide perovskite (CH3NH3PbI3−xClx) photovoltaic devices.
Externí odkaz:
https://doaj.org/article/99893b95154849c2b28ad888502ca54f
Publikováno v:
APL Materials, Vol 5, Iss 7, Pp 076102-076102-8 (2017)
The charge accumulation properties of p-i-n perovskite solar cells were investigated using three representative organic and inorganic hole transporting layer (HTL): (a) Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS, Al 4083), (
Externí odkaz:
https://doaj.org/article/3675eab6de014eaa9917e25968df0e8c