Adikari Arachchige Isuru Lakmal
@pdn.ac.lk
Research Assistant
University of Peradeniya
My current research interests primarily revolve around the development and optimization of thin-film solar cells, CdTe solar cells. I have expertise in various fabrication techniques such as thermal evaporation, CSS, CBD, spray and spin coating, and electrodeposition. Additionally, I explore material characterization using a wide range of techniques, including GIXRD, XRF, XPS, EIS, SEM and UV-visible spectroscopy, among others. My research also extends to device characterization through methods like current-voltage (I-V) measurements and external quantum efficiency (EQE) analysis. Furthermore, I investigate theoretical aspects using simulation tools like SCAPS-1D and Lumerical FDTD.
EDUCATION
PhD in Physics of Materials, University of Peradeniya, Sri Lanka
BSc (Hons) in Physics, University of Jaffna, Sri Lanka
RESEARCH, TEACHING, or OTHER INTERESTS
Physics and Astronomy, Materials Science
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Y. K. Abeykoon, A. A. I. Lakmal, M. A. H. M. Munasinghe, B. S. Dassanayake, and N. Gunawardhana
Springer Science and Business Media LLC
A.A.I. Lakmal, K.M.N.S. Bandara, V.A. Seneviratne, and B.S. Dassanayake
Elsevier BV
G. K. U. P. Gajanayake, A. A. I. Lakmal, D. S. M. De Silva, and B. S. Dassanayake
Springer Science and Business Media LLC
Y. K. Abeykoon, A. A. I. Lakmal, M. A. H. M. Munasinghe, B. S. Dassanayake, and N. Gunawardhana
Springer Science and Business Media LLC
Thuraisamykurukkal Thivakarasarma, Adikari Arachchige Isuru Lakmal, Buddhika Senarath Dassanayake, Dhayalan Velauthapillai, and Punniamoorthy Ravirajan
MDPI AG
This study focuses on fabricating efficient CdS/CdTe thin-film solar cells with thermally evaporated cuprous iodide (CuI) as hole-transporting material (HTM) by replacing Cu back contact in conventional CdS/CdTe solar cells to avoid Cu diffusion. In this study, a simple thermal evaporation method was used for the CuI deposition. The current-voltage characteristic of devices with CuI films of thickness 5 nm to 30 nm was examined under illuminations of 100 mW/cm2 (1 sun) with an Air Mass (AM) of 1.5 filter. A CdS/CdTe solar cell device with thermally evaporated CuI/Au showed power conversion efficiency (PCE) of 6.92% with JSC, VOC, and FF of 21.98 mA/cm2, 0.64 V, and 0.49 under optimized fabrication conditions. Moreover, stability studies show that fabricated CdS/CdTe thin-film solar cells with CuI hole-transporters have better stability than CdS/CdTe thin-film solar cells with Cu/Au back contacts. The significant increase in FF and, hence, PCE, and the stability of CdS/CdTe solar cells with CuI, reveals that Cu diffusion could be avoided by replacing Cu with CuI, which provides good band alignment with CdTe, as confirmed by XPS. Such an electronic band structure alignment allows smooth hole transport from CdTe to CuI, which acts as an electron reflector. Hence, CuI is a promising alternative stable hole-transporter for CdS/CdTe thin-film solar cells that increases the PCE and stability.
A. A. I. Lakmal, R. K. K. G. R. G. Kumarasinghe, V. A. Seneviratne, M. Thanihaichelvan, and B. S. Dassanayake
Springer Science and Business Media LLC
A.A.I. Lakmal, R.K.K.G.R.G. Kumarasinghe, V.A. Seneviratne, Jiann-Yeu Chen, Jenn-Ming Song, and B.S. Dassanayake
Elsevier BV
RECENT SCHOLAR PUBLICATIONS
MOST CITED SCHOLAR PUBLICATIONS
RESEARCH OUTPUTS (PATENTS, SOFTWARE, PUBLICATIONS, PRODUCTS)
10W prototype CdS/CdTe solar panel was developed with the collaboration of four universities.
INDUSTRY EXPERIENCE
Quality Control Technician – PVC Industry
S-Lon Lanka (PVT) Ltd., Sandalankawa, Sri Lanka
• Conducted on-production-line tests (dimension measurement) and off-production-line tests (raw material decomposition, mechanical and chemical stability).
• Acquired experience in PVC injection molding and extrusion.
• Developed skills in First Aid and Fire extinguishers.
• Demonstrated proficiency in working with various standards (SLS and ISO).