| 학회 | 한국재료학회 |
| 학술대회 | 2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 | 27권 2호 |
| 발표분야 | C. 에너지 재료 분과 |
| 제목 | Study of SnS/CdS based planar heterojunction solar cell using SCAPS 1D simulation |
| 초록 | Thin-film solar cells (TFSCs) needs absorber materials with the must required conditions such as non-toxic, inexpensive, and abundant in the earth’s crust for large-area application. Tin monosulfide (SnS) is one of the promising candidate absorber materials considering its low cost, nontoxicity, and abundancy with high absorption coefficient (≥104 cm-1) and appropriate bandgap (1.35 eV). Recently, the record power conversion efficiency (PCE) of 3.80% has been reported for SnS based TFSCs, which is very low compare to CdTe and Kieserite-based TFSCs. Hence, significant efforts are needed to enhance the PCE of SnS TFSCs and achieve its Shockley–Queisser limit of ~32%. In the present work, we focused on the SnS/CdS based device to analyse the limitations in current SnS TFSCs to achieve the better performance through the SCAPS 1D simulation program. The device structure (Mo/SnS/CdS/i-ZnO/AZO/Al) were chosen as a reference from one of our reported works with the highest PCE of 4.20%. To get a highly efficient device, the thickness of the SnS, CdS, and AZO layers was taken into the consideration. In detail, the thickness of absorber and buffer layer was varied from 800 nm to 2000 nm and 30 nm to 60 nm, respectively. The AZO layer thickness was varied from 300 nm to 500 nm. The highest PCE of 4.39% was obtained with VOC of 0.485 V, JSC of mA cm-2 15.70 and FF of 57.62% for the optimized device. Finally, an analysis of different factors that are limiting high efficiency solar cells is presented. |
| 저자 | Rahul Kumar Yadav1, Pravin Shivaji Pawar2, Jae Yu Cho1, Jaeyeong Heo2 |
| 소속 | 1Department of Material Science and Engineering and Optoelectronics Convergence Research Center, 2Chonnam National Univ. |
| 키워드 | SCAPS 1D; thin-film solar cells; SnS; power conversion efficiency; layer thickness |
