Institute of Fundamental Technological Research
Polish Academy of Sciences


R.J. Choi

Chonbuk National University (KR)

Recent publications
1.  Ruterana P., Singh P., Kret S., Jurczak G., Maciejewski G., Dłużewski P., Cho H.K., Choi R.J., Lee H.J., Suh E.K., Quantitative evolution of the atomic structure of defects and composition fluctuations at the nanometer scale inside InGaN/GaN heterostructures, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, ISSN: 0370-1972, Vol.241, No.12, pp.2643-2648, 2004

The cover picture of this issue depicts indium composition fluctuations in InGaN/GaN multi quantum wells. The coded color strain distribution (left) was derived from finite element method calculations of the strain relaxation process and high‐resolution transmission electron microscopy (HRTEM) image simulations, superimposed on the HRTEM image of the quantum wells. The possible corresponding shape and εxx strain profiles in the indium rich clusters (right) hint at a concentration close to pure InN in their core. The paper by Pierre Ruterana et al. [1] was presented at the 5th International Symposium on Blue Laser and Light Emitting Diodes (ISBLLED‐2004), held in Gyeongju, Korea, 15–19 March 2004.

HRTEM, quantum well, composition fluctuation, strain distribution

Ruterana P. - CNRS (FR)
Singh P. - CNRS (FR)
Kret S. - Institute of Physics, Polish Academy of Sciences (PL)
Jurczak G. - IPPT PAN
Maciejewski G. - IPPT PAN
Dłużewski P. - IPPT PAN
Cho H.K. - Dong-A University (KR)
Choi R.J. - Chonbuk National University (KR)
Lee H.J. - Chonbuk National University (KR)
Suh E.K. - Chonbuk National University (KR)

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