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Monolithic perovskite–silicon tandem solar cells with MoOx hole selective contact silicon bottom solar cells show a power conversion efficiency of 8%. A thin 15 nm-thick MoOx contact to n-type Si was used instead of a standard p+ emitter to collect holes and the SiOx/n+ poly-Si structure was deposited on the other side of the device for direct tunneling of electrons and this silicon bottom cell structure shows ~15% of power conversion efficiency. With this bottom carrier selective silicon cell, tin oxide, and subsequent perovskite structure were deposited to fabricate monolithic tandem solar cells. Monolithic tandem structure without ITO interlayer was also compared to confirm the role of MoOx in tandem cells and this tandem structure shows the power conversion efficiency of 3.3%. This research has confirmed that the MoOx layer simultaneously acts as a passivation layer and a hole collecting layer in this tandem structure.
Hoyoung Song; Changhyun Lee; Jiyeon Hyun; Sang-Won Lee; Dongjin Choi; DoWon Pyun; Jiyeon Nam; Seok-Hyun Jeong; Jiryang Kim; Soohyun Bae; Hyunju Lee; Yoonmook Kang; Donghwan Kim; Hae-Seok Lee. Monolithic Perovskite-Carrier Selective Contact Silicon Tandem Solar Cells Using Molybdenum Oxide as a Hole Selective Layer. Energies 2021, 14, 3108 .
AMA StyleHoyoung Song, Changhyun Lee, Jiyeon Hyun, Sang-Won Lee, Dongjin Choi, DoWon Pyun, Jiyeon Nam, Seok-Hyun Jeong, Jiryang Kim, Soohyun Bae, Hyunju Lee, Yoonmook Kang, Donghwan Kim, Hae-Seok Lee. Monolithic Perovskite-Carrier Selective Contact Silicon Tandem Solar Cells Using Molybdenum Oxide as a Hole Selective Layer. Energies. 2021; 14 (11):3108.
Chicago/Turabian StyleHoyoung Song; Changhyun Lee; Jiyeon Hyun; Sang-Won Lee; Dongjin Choi; DoWon Pyun; Jiyeon Nam; Seok-Hyun Jeong; Jiryang Kim; Soohyun Bae; Hyunju Lee; Yoonmook Kang; Donghwan Kim; Hae-Seok Lee. 2021. "Monolithic Perovskite-Carrier Selective Contact Silicon Tandem Solar Cells Using Molybdenum Oxide as a Hole Selective Layer." Energies 14, no. 11: 3108.
Al2O3/SiNx stack passivation layers are among the most popular layers used for commercial silicon solar cells. In particular, aluminum oxide has a high negative charge, while the SiNx film is known to supply hydrogen as well as impart antireflective properties. Although there are many experimental results that show that the passivation characteristics are lowered by using the stack passivation layer, the cause of the passivation is not yet understood. In this study, we investigated the passivation characteristics of Al2O3/SiNx stack layers. To identify the hydrogenation effect, we analyzed the hydrogen migration with atom probe tomography by comparing the pre-annealing and post-annealing treatments. For chemical passivation, capacitance-voltage measurements were used to confirm the negative fixed charge density due to heat treatment. Moreover, the field-effect passivation was understood by confirming changes in the Al2O3 structure using electron energy-loss spectroscopy.
Ji Yeon Hyun; Soohyun Bae; Yoon Chung Nam; DongKyun Kang; Sang-Won Lee; Donghwan Kim; Jooyoung Park; Yoonmook Kang; Hae-Seok Lee. Surface Passivation of Boron Emitters on n-Type Silicon Solar Cells. Sustainability 2019, 11, 3784 .
AMA StyleJi Yeon Hyun, Soohyun Bae, Yoon Chung Nam, DongKyun Kang, Sang-Won Lee, Donghwan Kim, Jooyoung Park, Yoonmook Kang, Hae-Seok Lee. Surface Passivation of Boron Emitters on n-Type Silicon Solar Cells. Sustainability. 2019; 11 (14):3784.
Chicago/Turabian StyleJi Yeon Hyun; Soohyun Bae; Yoon Chung Nam; DongKyun Kang; Sang-Won Lee; Donghwan Kim; Jooyoung Park; Yoonmook Kang; Hae-Seok Lee. 2019. "Surface Passivation of Boron Emitters on n-Type Silicon Solar Cells." Sustainability 11, no. 14: 3784.