[11p-N204-1~13] 13.9 Compound solar cells

▲ [11p-N204-8] Analysis of recombination mechanisms in KF-treated CIGS solar cells: Case of long-term Heat Light Soaking (HLS)

〇Hamidou Tangara¹, Yulu He¹, Muhammad Monirul Islam¹, Shogo Ishizuka², Takeaki Sakurai¹ (1.Univ.Tsukuba, 2.AIST)

Keywords:CIGS solar cells, Alkali post deposition treatment, Heat light soaking

Heat light soaking (HLS) has been reported to boost the efficiency of CIGS cells by increasing the net acceptor concentration. However, some negative effects of the method such as an increase of the recombination center density have also been reported. Thus, a careful evaluation of the impact of HLS on the properties of CIGS devices is necessary. In this work, we analyze the impact of the HLS on the V_OC loss mechanism in potassium treated (KF-PDT) CIGS solar cell devices using calculations based on the Shockley and Queisser detailed balance theory (SQ theory).