Local Mapping of Generation and Recombination Lifetime in BiFeO3 Single Crystals by Scanning Probe Photoinduced Transient Spectroscopy

M Alexe - Nano letters, 2012 - ACS Publications
Carrier lifetime in photoelectric processes is the average time an excited carrier is free
before recombining or trapping. Lifetime is directly related to defects and it is a key …

Transient photoconductivity measurements in semi‐insulating GaAs. I. An analog approach

RE Kremer, MC Arikan, JC Abele… - Journal of applied …, 1987 - pubs.aip.org
An experimental arrangement is described by which emission coefficient behavior
associated with deep‐level traps in semi‐insulating GaAs can be surveyed, from the …

Deep center characterization by photo‐induced transient spectroscopy

MJSP Brasil, P Motisuke - Journal of applied physics, 1990 - pubs.aip.org
We show that photo‐induced current transients in semi‐insulating GaAs are well fitted by a
unique sum of exponentials including the anomalous case, in which one of the exponentials …

Identification of intrinsic deep level defects responsible for electret behavior in TlGaSe2 layered semiconductor

MHY Seyidov, FA Mikailzade, T Uzun… - Physica B: Condensed …, 2016 - Elsevier
Unusual behavior of pyroelectric current signal polarity near the Curie point (T c) was
observed for TlGaSe 2 a ferroelectric-semiconductor. It has been revealed that the polarity of …

Nonexponentiality in photoinduced current transients in undoped semi‐insulating gallium arsenide

PK Giri, YN Mohapatra - Journal of applied physics, 1995 - pubs.aip.org
An isothermal spectroscopic technique called time‐analyzed transient spectroscopy (TATS)
has been used to study photoinduced current transients in undoped semi‐insulating GaAs. It …

Non-contact, no wafer preparation deep level transient spectroscopy based on surface photovoltage

J Lagowski, AMA Morawski… - Japanese journal of …, 1992 - iopscience.iop.org
We discuss a novel approach to Deep Level Transient Spectroscopy (DLTS) in which the
emission of trapped minority carriers is analyzed employing the surface photovoltage (SPV) …

Contactless Spectroscopy of deep levels in semiconducting materials: GaAs

I Davydov, O Ivanov, D Svircov, G Georgiev… - Spectroscopy …, 1994 - Taylor & Francis
The surface photo voltage (SPV) and photocurrent (PC) transients as a result of the
excitation by the short high-intensity light pulses from semiconductor's intrinsic absorption …

Defect topography on GaAs wafers by microwave‐detected photo‐induced current transient spectroscopy

B Gründig‐Wendrock, JR Niklas - physica status solidi (c), 2003 - Wiley Online Library
Photo‐generated charge carriers can be detected by microwave absorption. This enables
non‐destructive measurements of photoconductivity with a spatial resolution depending on …

Activation energies of the EL6 trap and of the 0.15 eV donor and their correlation in GaAs

T Richter, G Kühnel, W Siegel… - … science and technology, 2000 - iopscience.iop.org
In the understanding of properties of deep levels in undoped bulk GaAs there are still
considerable deficiencies and obscurities. One example is the activation energy of the …

Scanning‐DLTS investigations on semi‐insulating GaAs: Cr, In containing “streamers”

O Breitenstein, LJ Giling - physica status solidi (a), 1987 - Wiley Online Library
Scanning‐DLTS in the current detection mode with an applied bias is shown to be able to
detect spatial inhomogeneities of deep level defects in semi‐insulating materials with a high …