Session Index

S8. Thin Film and Photovoltaic Technology

Thin Film and Photovoltaic Technology I
Friday, Dec. 1, 2023  13:00-15:00
Presider: Prof. Fang-Chung Chen (National Yang Ming Chiao Tung University, Taiwan) Prof. Hao-Wu Lin (National Tsing Hua University, Taiwan)
Room: 92283 (2F)
13:00 - 13:30
Manuscript ID.  0646
Paper No.  2023-FRI-S0801-I001
Invited Speaker:
Gang Li
Advancing Organic Photovoltaics - active layer and potential applications
Gang Li, Hong Kong Polytechnic University (Hong Kong)

13:30 - 13:45 Award Candidate (Paper Competition)
Manuscript ID.  1058
Paper No.  2023-FRI-S0801-O001
Yu-Ting Chen Characterization of Open-Circuit Voltage Loss in Perovskite Solar Cells with Different Hole Transport Layers
Yu-Ting Chen, Tzung-Fang Guo, National Cheng Kung University (Taiwan)

In this study, we measured photovoltaic external quantum efficiency and electroluminescence external quantum efficiency of the devices to characterize the energy loss of open-circuit voltage in perovskite solar cells with different hole transport layers. The results show that the non-radiative recombination loss is the majority impact factor. Moreover, it is affected by the energy alignment between the hole transport layer and the perovskite layer. According to the results of photoluminescence and time-resolved photoluminescence, the non-radiative recombination contributes to the photoluminescence quenching effect in the interface between the hole transport layer and perovskite.

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13:45 - 14:00 Award Candidate (Paper Competition)
Manuscript ID.  0708
Paper No.  2023-FRI-S0801-O002
Galing Murokinas Improving Ternary Lead-Based Perovskite Solar Cell Performance through All-Vacuum Deposition Process
Galing Murokinas, Ming Chi University of Technology (Taiwan); Guan-Hung Chen, Yu-Chen Huang, Chih-Chien Lee, National Taiwan University of Science and Technology (Taiwan); Shun-Wei Liu, Ming Chi University of Technology (Taiwan)

In the pursuit of commercialization, a feasible strategy involves refining the vapor deposition process for producing perovskite thin films and transport layers, offers numerous remarkable advantages including precise control of layer thickness, exceptional homogeneity of the resultant thin film, and the ability to select appropriate materials and compositions. In this work, we employed an all-vacuum deposition process for the fabrication of MHP solar cells. As a result, the devices achieved remarkable performance, including an open circuit voltage of 0.95V, a short circuit current density of 21.02 mA/cm2, a fill factor of 68.32%, and a PCE of 13.64%.

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14:00 - 14:15 Award Candidate (Paper Competition)
Manuscript ID.  1042
Paper No.  2023-FRI-S0801-O003
Yi-Tsen Chen Optimization of PTAA/Perovskite Interface for Efficient Inverted Perovskite Solar Cells
Yi-Tsen Chen, Yi-Hong Lai, National Cheng Kung University (Taiwan), Academia, Sinica (Taiwan); Yu-Ting Chen, Pi-Yun Hsiao, Academia, Sinica (Taiwan), National Cheng Kung University (Taiwan); Peter Chen, National Cheng Kung University (Taiwan); Tzung-Fang Guo, National Cheng Kung University (Taiwan), Academia, Sinica (Taiwan)

In inverted structure perovskite solar cell, poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine (PTAA) is considered the best choice for the hole transport layer (HTL), regardless of optical properties or electrical conductivity. However, its hydrophobic surface impedes the development of perovskite thin films. Here, discuss the modification of the PTAA surface, aimed at enhancing device efficiency. This involves addressing the issue of incomplete perovskite film coverage by adjusting the perovskite mixed solvent. Additionally, we utilize PFN-Br to modify the PTAA/Perovskite interface, effectively reducing perovskite defects and achieving the best device efficiency values of VOC=1.10 V, JSC=21.38 mA/cm², FF=77.95 %, and PCE=18.27 %.

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14:15 - 14:30 Award Candidate (Paper Competition)
Manuscript ID.  1063
Paper No.  2023-FRI-S0801-O004
Pi-Yun Hsiao Atomic Layer Deposition Free Process for Sputtering Buffer Layer in Large Area Bifacial Perovskite Solar Cells and Tandem Solar Cells
Pi-Yun Hsiao, Yu-Ting Chen, National Cheng Kung University (Taiwan), Academia, Sinica (RCAS) (Taiwan); Yi-Tsen Chen, Ming-Xun Jiang, Tzung-Fang Guo, Academia, Sinica (RCAS) (Taiwan), National Cheng Kung University (Taiwan); Chih-Wei Chu, Academia, Sinica (RCAS) (Taiwan); Peter Chen, National Cheng Kung University (Taiwan)

We successfully use polyethylenimine ethoxylated (PEIE) as a buffer layer to mitigate ion bombardment damage during the sputtering of transparent conductive oxide (TCO) in our process. We fabricated large-area bifacial devices, achieving PCE of 15.21 %, and produced a perovskite/silicon tandem solar cell, which reached PCE of 16.51%.

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14:30 - 14:45 Award Candidate (Paper Competition)
Manuscript ID.  0573
Paper No.  2023-FRI-S0801-O005
Karthikeyan Embrose Enhancing Perovskite Solar Cell Efficiency through Guanidine Hydrochloride Surface Modification
Karthikeyan Embrose, Thangaraji Vasudevan, Lung-Chien Chen, National Taipei University of Technology (NTUT) (Taiwan)

In this study, researchers employed guanidine hydrochloride (GuHCl) for surface modification of Perovskite Solar Cell (PVK-SC) films. Theoretical simulations of the resulting PVSK:GuHCl exhibited a strong correlation with experimental data, indicating significant performance improvements in the devices. Theoretical analysis results indicate that passivating the surface states of the perovskite layer could improve the device’s performance. Initial tests on perovskite devices without a passivation layer displayed impressive attributes, including a high-power conversion efficiency of 16%. Therefore, there is a strong belief that passivating with PVK:GuHCl will lead to even higher photoconversion efficiency and enhanced stability in solar cell devices.

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14:45 - 15:00 Award Candidate (Paper Competition)
Manuscript ID.  0624
Paper No.  2023-FRI-S0801-O006
Sin-You Chen Applying metamaterial prefect absorber to an indoor solar photovoltaics
Sin-You Chen, Tsung-Yu Huang, Ming Chi University of Technology (Taiwan)

Here, we would like to integrate metamaterial absorbers to an indoor solar cell. The total absorption and absorption integral values for the integrated device and the ITO cell are 3.42/276 and 3.45/281, respectively. The difference in the two values is only 0.87% and 1.78%, respectively. With minimal differences in optical absorption, our proposed integrated device features a smaller measured sheet resistance 4.42/□, respectively and benefits from the higher flexibility and lower metal cost. Therefore, we believe our proposed metamaterial perfect absorber could be a promising candidate for transparent conductive electrodes in future indoor low-light photovoltaic cells.

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