TY - JOUR
T1 - Strategies for high performance perovskite/crystalline silicon four-terminal tandem solar cells
AU - Ren, Zhiwei
AU - Zhou, Jixiang
AU - Zhang, Yaokang
AU - Ng, Annie
AU - Shen, Qian
AU - Cheung, Sin Hang
AU - Shen, Hui
AU - Li, Kan
AU - Zheng, Zijian
AU - So, Shu Kong
AU - Djurišić, Aleksandra B.
AU - Surya, Charles
N1 - Funding Information:
This work was supported by the RGC Theme-based Research Scheme (Grant number: HKU T23-713/11 ), ECS of Hong Kong ( PolyU 5030/12P ), GRF of Hong Kong ( PolyU 5036/13P ), The Hong Kong Polytechnic University (Project 1-ZVGH, 1-ZVK1), the Clarea Au Endowment Professorship and Central Research Grant of The Hong Kong Polytechnic University, and the Guangdong-Hong Kong Technology Cooperation Funding Scheme ( 2014B050505010 ).
PY - 2018/6/1
Y1 - 2018/6/1
N2 - In this work, we report systematic studies on improving the optical and electrical properties of four-terminal perovskite/c-Si tandem solar cells. Light harvesting power of the device is significantly enhanced due to the complementary absorption spectra of the perovskite and c-Si absorber materials. To obtain high power conversion efficiency (PCE) for the device, careful engineering of optoelectronic properties of the devices are accomplished through: 1. Oxygen annealing treatment for reducing defect density of perovskite materials; 2. Optical engineering of the transparent electrode (MoO3/Au/MoO3) to obtain high transmission at long wavelengths for the tandem solar cell applications; and 3. Enhancement of light harvesting power achieved by using the novel biomimicking elastomeric petals as the light trapping layer. The individual perovskite solar cell (PSC) with MoO3/Au/MoO3 electrode with or without light trapping layer yields an average PCE of 16.6% and 16.0% respectively. By combining c-Si bottom cell with perovskite top cell mechanically, an overall PCE of 22.4% is achieved for the averaged value, which is a promising result for future development of perovskite based tandem solar cells.
AB - In this work, we report systematic studies on improving the optical and electrical properties of four-terminal perovskite/c-Si tandem solar cells. Light harvesting power of the device is significantly enhanced due to the complementary absorption spectra of the perovskite and c-Si absorber materials. To obtain high power conversion efficiency (PCE) for the device, careful engineering of optoelectronic properties of the devices are accomplished through: 1. Oxygen annealing treatment for reducing defect density of perovskite materials; 2. Optical engineering of the transparent electrode (MoO3/Au/MoO3) to obtain high transmission at long wavelengths for the tandem solar cell applications; and 3. Enhancement of light harvesting power achieved by using the novel biomimicking elastomeric petals as the light trapping layer. The individual perovskite solar cell (PSC) with MoO3/Au/MoO3 electrode with or without light trapping layer yields an average PCE of 16.6% and 16.0% respectively. By combining c-Si bottom cell with perovskite top cell mechanically, an overall PCE of 22.4% is achieved for the averaged value, which is a promising result for future development of perovskite based tandem solar cells.
KW - Biomimicking elastomeric petals
KW - Oxygen annealing
KW - Perovskites
KW - Silicon
KW - Tandem solar cells
KW - Transparent electrodes
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U2 - 10.1016/j.solmat.2018.01.004
DO - 10.1016/j.solmat.2018.01.004
M3 - Article
AN - SCOPUS:85042025119
VL - 179
SP - 36
EP - 44
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
SN - 0927-0248
ER -