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Main research field: studying the dynamics of non-equilibrium carriers in semiconductors, nanostructures, and other solid-state materials.

Research techniques: a complementary set of advanced nonlinear optical methods including photoluminescence spectroscopy with picosecond time and sub-micrometer spatial resolution, spectrally-resolved pump-probe techniques with femtosecond time resolution, and light-induced transient grating (LITG) technique for simultaneous all-optical determination of carrier lifetime and diffusivity. Numerical simulation of carrier dynamics is currently performed by Monte Carlo technique.

Current research topics:

  • Study of fast processes in self-activated and doped scintillating materials aimed at developing fast radiation detectors with time resolution of the order of 10 ps for applications in medical imaging and high-energy physics experiments, especially targeted on the needs and specifications of the coming upgrades of CERN experiments.

  • Investigation of carrier recombination and diffusion in III-nitride semiconductors and their heterostructures aimed at a better understanding of the impact of carrier localization and internal electrical field on the radiative recombination properties and quantum efficiency of III-nitride LEDs. Currently, a particular focus is on stimulated emission in wide-band-gap nitrides, quantum efficiency of green-emitting InGaN LEDs, and InN-based infrared optoelectronic devices.

  • Analysis of carrier transport peculiarities in hybrid metal-halide perovskite semiconductors. The most significant input to the field is provided by exploiting the unique LITG technique for all-optical measurements of carrier diffusivity in disordered wet-cast and crystalline perovskites of various composition.

Side topics also involve characterization of photovoltaic devices, plasmonics, wide band gap semiconductors (SiC, diamond, GaN) for power electronics, etc.

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G Tamulaitis

Professor Gintautas Tamulaitis

Chief Researcher

Saulėtekio av. 3, room B231

Phone: +370 5 223-4481

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V Tamosiunas

Professor Vincas Tamošiūnas

Chief Researcher

Saulėtekio av. 3, room B226

Phone: +370 5 223-4491

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E Kuokstis

Professor Edmundas Kuokštis

Professor

Saulėtekio av. 3, room A323

Phone: +370 5 223-4542

R Aleksiejunas

Dr. Ramūnas Aleksiejūnas

Senior Researcher

Saulėtekio av. 3, room B228

Phone: +370 5 223-4492

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J Mickevicius

Dr. Jūras Mickevičius

Senior Researcher

Saulėtekio av. 3, room B221

Phone: +370 5 223-4508

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S Nargelas

Dr. Saulius Nargelas

Senior Researcher

Saulėtekio av. 3, room B228

Phone: +370 5 223-4492

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P Scajev

Dr. Patrik Ščajev

Senior Researcher

Saulėtekio av. 3, room B227

Phone: +370 5 223-4493

Google Scholar, ResearchGate, OrcID

D Dobrovolskas

Dr. Darius Dobrovolskas

Researcher

Saulėtekio av. 3, room B221

Phone: +370 5 223-4508

Google Scholar

J Jurkevicius

Dr. Jonas Jurkevičius

Researcher

Saulėtekio av. 3, room B222

Phone: +370 5 223-4509

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Z Podlipskas

Dr. Žydrūnas Podlipskas

Researcher

Saulėtekio av. 3, room A201

Phone: +370 5 223-4467

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K Nomeika

Dr. Kazimieras Nomeika

Researcher

Saulėtekio av. 3, room A201

Phone: +370 5 223-4467

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A Vaitkevicius

Dr. Augustas Vaitkevičius

Researcher

Saulėtekio av. 3, room B222

Phone: +370 5 223-4509

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O Kravcov

Oleg Kravcov

PhD student, Junior Researcher

Saulėtekio av. 3, room B225

Phone: +370 5 223-4490

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