The appearance of Ti3+ states in solution-processed TiOx buffer layers in inverted organic photovoltaics / Zhidkov Ivan S.,McLeod John A.,Kurmaev Ernst Z.,Korotin Michael A.,Kukharenko Andrey I.,Savva Achilleas,Choulis Stelios A.,Korotin Danila M.,Cholakh Seif O. // APPLIED PHYSICS LETTERS. - 2016. - V. 109, l. 2.

ISSN/EISSN:

0003-6951 / 1077-3118

Type:

Article

Abstract:

We study the low-temperature solution processed TiOx films and device structures using core level and valence X-ray photoelectron spectroscopy (XPS) and electronic structure calculations. We are able to correlate the fraction of Ti3+ present as obtained from Ti 2p core level XPS with the intensity of the defect states that appear within the band gap as observed with our valence XPS. Constructing an operating inverted organic photovoltaic (OPV) using the TiOx film as an electron selective contact may increase the fraction of Ti3+ present. We provide evidence that the number of charge carriers in TiOx can be significantly varied and this might influence the performance of inverted OPVs. Published by AIP Publishing.

Author keywords:

SOLAR-CELLS; BINDING; SITES; OXIDE; FILM

DOI:

10.1063/1.4958892

Web of Science ID:

ISI:000381155200034

Соавторы в МНС:

Другие поля

Поле	Значение
Month	JUL 11
Publisher	AMER INST PHYSICS
Address	1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
Language	English
Article-Number	022108
EISSN	1077-3118
Keywords-Plus	SOLAR-CELLS; BINDING; SITES; OXIDE; FILM
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
Author-Email	jmcleod@suda.edu.cn
ResearcherID-Numbers	Korotin, Michael/J-3252-2013 Zhidkov, Ivan/L-3543-2013 Kurmaev, Ernst/J-4254-2013 Korotin, Danila/J-4263-2013
ORCID-Numbers	Korotin, Michael/0000-0002-9603-8374 Zhidkov, Ivan/0000-0001-8727-4730 Kurmaev, Ernst/0000-0003-4625-4930 Korotin, Danila/0000-0002-9800-6552 Cholakh, Seif/0000-0002-9313-6614 choulis, Stelios/0000-0002-7899-6296
Funding-Acknowledgement	Government of the Russian Federation {[}02.A03.21.0006]; European Regional Development Fund; Republic of Cyprus through the Research Promotion Foundation {[}NEA YPiODeltaOMH/SigmaTPATH/0308/06]; National Natural Science Foundation of China {[}11404232]; China Postdoctoral Science Foundation {[}2014M551645]; Russian Science Foundation {[}14-22-00004]
Funding-Text	This research was done with partial support from the Government of the Russian Federation (Act 211. Agreement No. 02.A03.21.0006), the European Regional Development Fund, and the Republic of Cyprus through the Research Promotion Foundation (Strategic Infrastructure Project NEA Y Pi O Delta OMH/Sigma TPATH/0308/06), the National Natural Science Foundation of China (Project No. 11404232). and the China Postdoctoral Science Foundation (Project No. 2014M551645). The CPA calculations were supported by the Russian Science Foundation (Project No. 14-22-00004).
Number-of-Cited-References	25
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	19
Journal-ISO	Appl. Phys. Lett.
Doc-Delivery-Number	DT0EH