Carbon Nanotube Electrode‐Based Perovskite–Silicon Tandem Solar Cells. Issue 12 (29th September 2020)

• Record Type: Journal Article
• Authors: Lee, Changhyun; Lee, Sang-Won; Bae, Soohyun; Shawky, Ahmed; Devaraj, Vasanthan; Anisimov, Anton; Kauppinen, Esko I.; Oh, Jin-Woo; Kang, Yoonmook; Kim, Donghwan; Jeon, Il; Maruyama, Shigeo; Lee, Hae-Seok
• Is Part Of: Solar RRL. Volume 4:Issue 12(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-09-29
• Subjects: carbon nanotubes -- perovskite solar cells -- silicon solar cells -- tandem solar cells -- transparent perovskite solar cells; Solar energy -- Periodicals; Photovoltaic power generation -- Periodicals; Solar energy -- Research -- Periodicals; Photovoltaic power generation -- Research -- Periodicals; Periodicals; 333.7923
• DOI: 10.1002/solr.202000353
• Languages: English
• ISSNs: 2367-198X

Abstract

Abstract : Carbon nanotube electrode–laminated perovskite solar cells in combination with n‐type tunnel oxide–passivated contact silicon solar cells demonstrate a high power conversion efficiency (PCE) of 24.42% when stacked in tandem. This is compared with conventional indium tin oxide/MoO x ‐deposited perovskite solar cells which give an efficiency of 22.35% when stacked in the same four‐terminal tandem system. Despite higher transmittance of the carbon nanotube electrode than that of the indium tin oxide/MoO x in the infrared range, the carbon nanotube electrode‐laminated devices show lower transmittance in the same region due to the total internal reflection and scattering as evidenced by optical simulation. Yet, the exceptionally high PCE of the carbon nanotube electrode‐laminated semitransparent devices far exceeding than that of the indium tin oxide/MoO x ‐deposited semitransparent top cell outweighs the effect of the optical transparency. Four types of silicon solar cells are compared as the bottom subcells, and the n‐type tunnel oxide‐passivated contact silicon solar cells are the best choice mainly due to their high absorption in the long‐wavelength region. The obtained 24.42% efficiency is one of the high PCEs among the reported four‐terminal perovskite–silicon solar cells, and this article is the first demonstration of the carbon nanotube electrode application in tandem solar cells. Abstract : Carbon nanotube electrode–laminated perovskite and n‐type tunnel oxide–passivated contact (TOPCon) silicon solar cells exhibit 24.42% efficiency when stacked in tandem. Both semitransparency and power conversion efficiency are important for top subcells of tandem solar cells. The carbon nanotube‐based perovskite solar cells demonstrate record high efficiency among the reported four‐terminal tandem solar cells while exhibiting good semitransparency.