Visibly Transparent Monolithic Perovskite/Organic Tandem Solar Cells Achieving Over 6% Light‐Utilization Efficiency
Abstract
ABSTRACT Transparent photovoltaics for solar‐window applications must balance human‐visible clarity with meaningful power output. Here, we report a selectively absorbing, monolithic perovskite/organic tandem that decouples visible transmittance from photocurrent generation and minimizes voltage loss delivering record light‐utilization efficiency (LUE) for visibly transparent (VT) tandem devices. An ultra‐wide‐bandgap, DMA‐alloyed perovskite top sub‐cell harvests primarily <∼530 nm, achieving, as a single junction, AVT 65.68% and power conversion efficiency (PCE) 8.23% (LUE 5.46%). Complemented by a ternary PCE10‐2Cl:Y6:Y12 bottom stack that minimizes visible absorption while harvesting in the NIR, the tandem reaches PCE 10.91% at AVT 55.39%, yielding LUE 6.04%. To the best of our knowledge, this is the first VT monolithic perovskite/organic tandem to surpass 6% LUE at AVT ≥ 50%, while delivering a record‐high open circuit voltage ( V OC ) of 2.38 V. These results establish optical–electrical co‐design guidelines for high‐clarity, power‐generating glazing, which explicitly connect materials and interface choices in both sub‐cells to energetic disorder, built‐in potential, and recombination.
Article Details
Authors (16)
Jun Ryu
Department of Smart Cities Chung‐Ang University Seoul Republic of Korea
Seojun Lee
Department of Smart Cities Chung‐Ang University Seoul Republic of Korea
Un‐Hak Lee
Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of Korea
Yeonsu Choi
Photoenergy Research Center Korea Research Institute of Chemical Technology (KRICT) Daejeon Republic of Korea
Tae‐Gyeong Lee
Department of Energy Systems Engineering Chung‐Ang University Seoul Republic of Korea
Se Jeong Park
Photoenergy Research Center Korea Research Institute of Chemical Technology (KRICT) Daejeon Republic of Korea
Sumin An
Department of Energy Systems Engineering Chung‐Ang University Seoul Republic of Korea
Seunghyun Rhee
Photoenergy Research Center Korea Research Institute of Chemical Technology (KRICT) Daejeon Republic of Korea
Han‐Gyun Lim
Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of Korea
Inho Bae
Department of Molecular Science and Technology Ajou University Suwon Republic of Korea
Jong H. Kim
Cardiomyocyte Renewal Laboratory, Texas Heart Institute, Houston (Y.M., J.H.K., R.G.L., L.L., S.L., J.F.M.).
Bo Ram Lee
School of Advanced Materials Science and Engineering
Gyu Min Kim
Jincheol Kim
School of Engineering Macquarie University Sydney New South Wales Australia
Seo‐Jin Ko
Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of Korea
Dong‐Won Kang
School of Energy Systems Engineering Chung‐Ang‐University Seoul Republic of Korea