工業技術研究院

技術簡介

在鈣鈦礦上電池的製程中，透過改良浸泡沉積法製備L-histidine自組裝單分子層，顯著提升吸收層品質，降低界面缺陷與漏電流。同時，優化雷射燒蝕參數，成功減少前後電極的接觸電阻，製備的半穿透鈣鈦礦模組開路電壓達8.08 V，電流密度為20.4 mA/cm²。此外，針對透明導電背電極的穿透度與導電性進行優化，實現片電阻低於15 ohm/sq，並在波長900 nm處的透光率超過80％。最終，透過堆疊結構整合，開發出效率達26.38％的4端點鈣鈦礦/矽晶堆疊太陽電池，效率相較單層矽晶電池提升7.8％。

Abstract

For the perovskite top cell, an enhanced dip-coating method was utilized to fabricate L-histidine self-assembled monolayers, significantly improving absorber quality and reducing interfacial defects and leakage current. Laser ablation parameters were optimized to minimize contact resistance between front and rear electrodes, resulting in a semi-transparent perovskite module with an open-circuit voltage of 8.08 V and a current density of 20.4 mA/cm2. Additionally, transparent conductive back electrodes were enhanced for transmittance and conductivity, achieving a sheet resistance below 15 ohm/sq and transmittance above 80％ at 900 nm. Finally, the integration of the tandem structure enabled the development of a 4-terminal perovskite/silicon tandem solar cell with an efficiency of 26.38％, representing a 7.8％ improvement compared to single-junction silicon cells.

技術規格

1.透過左旋組胺酸(L-Histidine, L-His)自組裝層對電子傳輸層與鈣鈦礦吸收層的介面缺陷鈍化處理。在反向偏壓(0~-1V)操作之鈣鈦礦太陽電池漏電流密度為6.8*10-7~1.7*10-5 mA/cm2。 2.透過調整雷射強度及劃線圖案，優化P2雷射燒蝕深度與寬度，使半穿透鈣鈦礦太陽光電mini模組(8個元件)電壓8.08 V，電流20.4 mA/cm2。 3.優化ITO背透明導電電極，在製程功率為300W且製程時間為1800s條件下，當製程氣體氧氣流量介於0.3~0.6 sccm時，片電阻均可小於15 ohm/sq.，且波長900 nm的穿透度大於80 ％。 4.活性面積(Active area)為4 / 4 cm2的鈣鈦礦-矽晶堆疊太陽電池達到 26.38％ 的效率。

Technical Specification

1.Using L-Histidine (L-His) self-assembled monolayers to passivate interface defects between the electron transport layer and the perovskite absorption layer. The leakage current density of the perovskite solar cell under reverse bias (0 to -1 V) was measured at 6.8 × 10⁻⁷ to 1.7 × 10⁻⁵ mA/cm². 2.By adjusting laser intensity and pattern design, the P2 laser scribing depth and width were optimized, resulting in a semi-transparent perovskite photovoltaic mini-module (8 cells) with a voltage of 8.08 V and a current of 20.4 mA/cm². 3.Optimized ITO transparent conductive back electrodes with a processing power of 300 W and processing time of 1800 seconds. When the oxygen flow rate was between 0.3 and 0.6 sccm, the sheet resistance was below 15 ohm/sq, and the transmittance at 900 nm wavelength exceeded 80％. 4.A perovskite-silicon tandem solar cell with an active area of 4 cm² achieved an efficiency of 26.38％.

技術特色

堆疊結構整合，開發出效率達26.38％的4端點鈣鈦礦/矽晶堆疊太陽電池，效率相較單層矽晶電池提升7.8％。

應用範圍

堆疊太陽電池

接受技術者具備基礎建議（設備）

相關鈣鈦礦太陽電池設備

接受技術者具備基礎建議（專業）

相關鈣鈦礦太陽電池設備

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