Maximizing carrier extraction in hybrid back-contact silicon solar cells

2026-03-10

PRE

Zilong Zheng *

Xiqi Yang

Jiaxing Wang

Qinghua Zeng *

C. Helin Zhang

Hong Zhang

Jiarong Huang

Yuhua Wang

Zeguo Tang

Rongkun Zhou

Hongbo Cai

Xiaofei Xu

Wanyu Lu

Qian Kang

Kun Zheng *

Y. Q. Zhang

Zhiyong Wang

Y. Yang

Jinyan Zhang *

Hui Yan

DOI：10.1038/s41586-026-10351-8

Original

Original request for help

Save

Abstract

En 中文

Hybrid back-contact (BC) silicon solar cells 1-3 combine the strengths of TOPCon-derived 4-7 n-type contacts, SHJ-derived 8-12 p-type contacts, and interdigitated BC (IBC)13,14 device structures. Though high performance in the form of 27.8% efficiency has been demonstrated,1 the understanding of the fundamental advantages of the hybrid BC architecture over conventional BC cells (e.g. eliminating front-surface metallization shading 3) remains unexplored. Here we take advantage of the design flexibility of the hybrid BC architecture to use a multifunctional front layer for both light trapping and passivation. Meanwhile, we improved carrier collection and process compatibility of the rear carrier-selective contacts. We also show the optimal c-Si absorber thickness is increased to 160-μm, leading to a certified efficiency of 27.62% for industrially compatible c-Si solar cells.

Keywords:

Solar cells

Science

Humanities and Social Sciences

multidisciplinary

Maximizing carrier extraction in hybrid back-contact silicon solar cells

Abstract

Journal

Organization

Cited Papers

Citing Papers